Home / 4,218.76-5,820.28-2,644.12

Finding the Fourth Proportional to 4,218.76, 5,820.28 and 2,644.12

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Solution

The fourth proportional to 4,218.76, 5,820.28 and 2,644.12 is: 3,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.76 : 5,820.28 = 2,644.12 : x
  2. Step 2: Convert to fraction form
    4,218.76/5,820.28 = 2,644.12/x
  3. Step 3: Cross multiply
    4,218.76x = 5,820.28 × 2,644.12
  4. Step 4: Simplify right side
    4,218.76x = 15,389,518.75
  5. Step 5: Solve for x
    x = 15,389,518.75/4,218.76
  6. Step 6: Final answer
    x = 3,647.88

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Half scale
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Double scale
Find fourth proportional to 4,219.76, 5,821.66 and 2,645.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.