Home / 5,685.60-8,528.40-3,487.20

Finding the Fourth Proportional to 5,685.60, 8,528.40 and 3,487.20

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Solution

The fourth proportional to 5,685.60, 8,528.40 and 3,487.20 is: 5,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.60 : 8,528.40 = 3,487.20 : x
  2. Step 2: Convert to fraction form
    5,685.60/8,528.40 = 3,487.20/x
  3. Step 3: Cross multiply
    5,685.60x = 8,528.40 × 3,487.20
  4. Step 4: Simplify right side
    5,685.60x = 29,740,236.48
  5. Step 5: Solve for x
    x = 29,740,236.48/5,685.60
  6. Step 6: Final answer
    x = 5,230.80

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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.