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Finding the Fourth Proportional to 5,080.76, 7,621.14 and 1,383

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Solution

The fourth proportional to 5,080.76, 7,621.14 and 1,383 is: 2,074.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,080.76 : 7,621.14 = 1,383 : x
  2. Step 2: Convert to fraction form
    5,080.76/7,621.14 = 1,383/x
  3. Step 3: Cross multiply
    5,080.76x = 7,621.14 × 1,383
  4. Step 4: Simplify right side
    5,080.76x = 10,540,036.62
  5. Step 5: Solve for x
    x = 10,540,036.62/5,080.76
  6. Step 6: Final answer
    x = 2,074.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 5,081.76, 7,622.64 and 1,384
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.