Home / 4,743.75-7,115.63-1,281

Finding the Fourth Proportional to 4,743.75, 7,115.63 and 1,281

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Solution

The fourth proportional to 4,743.75, 7,115.63 and 1,281 is: 1,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,743.75 : 7,115.63 = 1,281 : x
  2. Step 2: Convert to fraction form
    4,743.75/7,115.63 = 1,281/x
  3. Step 3: Cross multiply
    4,743.75x = 7,115.63 × 1,281
  4. Step 4: Simplify right side
    4,743.75x = 9,115,115.63
  5. Step 5: Solve for x
    x = 9,115,115.63/4,743.75
  6. Step 6: Final answer
    x = 1,921.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 4,744.75, 7,117.13 and 1,282
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.