Home / 6,585.12-9,087.20-3,931.20

Finding the Fourth Proportional to 6,585.12, 9,087.20 and 3,931.20

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Solution

The fourth proportional to 6,585.12, 9,087.20 and 3,931.20 is: 5,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,585.12 : 9,087.20 = 3,931.20 : x
  2. Step 2: Convert to fraction form
    6,585.12/9,087.20 = 3,931.20/x
  3. Step 3: Cross multiply
    6,585.12x = 9,087.20 × 3,931.20
  4. Step 4: Simplify right side
    6,585.12x = 35,723,600.64
  5. Step 5: Solve for x
    x = 35,723,600.64/6,585.12
  6. Step 6: Final answer
    x = 5,424.90

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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.