Home / 8,720.60-12,035.59-5,585.90

Finding the Fourth Proportional to 8,720.60, 12,035.59 and 5,585.90

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Solution

The fourth proportional to 8,720.60, 12,035.59 and 5,585.90 is: 7,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.60 : 12,035.59 = 5,585.90 : x
  2. Step 2: Convert to fraction form
    8,720.60/12,035.59 = 5,585.90/x
  3. Step 3: Cross multiply
    8,720.60x = 12,035.59 × 5,585.90
  4. Step 4: Simplify right side
    8,720.60x = 67,229,528.04
  5. Step 5: Solve for x
    x = 67,229,528.04/8,720.60
  6. Step 6: Final answer
    x = 7,709.28

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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.