Home / 5,547.60-8,321.40-5,125.20

Finding the Fourth Proportional to 5,547.60, 8,321.40 and 5,125.20

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Solution

The fourth proportional to 5,547.60, 8,321.40 and 5,125.20 is: 7,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,547.60 : 8,321.40 = 5,125.20 : x
  2. Step 2: Convert to fraction form
    5,547.60/8,321.40 = 5,125.20/x
  3. Step 3: Cross multiply
    5,547.60x = 8,321.40 × 5,125.20
  4. Step 4: Simplify right side
    5,547.60x = 42,648,839.28
  5. Step 5: Solve for x
    x = 42,648,839.28/5,547.60
  6. Step 6: Final answer
    x = 7,687.80

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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.