Home / 9,287.46-12,821.67-7,158.32

Finding the Fourth Proportional to 9,287.46, 12,821.67 and 7,158.32

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Solution

The fourth proportional to 9,287.46, 12,821.67 and 7,158.32 is: 9,882.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,287.46 : 12,821.67 = 7,158.32 : x
  2. Step 2: Convert to fraction form
    9,287.46/12,821.67 = 7,158.32/x
  3. Step 3: Cross multiply
    9,287.46x = 12,821.67 × 7,158.32
  4. Step 4: Simplify right side
    9,287.46x = 91,781,652.76
  5. Step 5: Solve for x
    x = 91,781,652.76/9,287.46
  6. Step 6: Final answer
    x = 9,882.32

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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.