Home / 9,116.46-12,581.28-5,137.92

Finding the Fourth Proportional to 9,116.46, 12,581.28 and 5,137.92

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Solution

The fourth proportional to 9,116.46, 12,581.28 and 5,137.92 is: 7,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.46 : 12,581.28 = 5,137.92 : x
  2. Step 2: Convert to fraction form
    9,116.46/12,581.28 = 5,137.92/x
  3. Step 3: Cross multiply
    9,116.46x = 12,581.28 × 5,137.92
  4. Step 4: Simplify right side
    9,116.46x = 64,641,610.14
  5. Step 5: Solve for x
    x = 64,641,610.14/9,116.46
  6. Step 6: Final answer
    x = 7,090.65

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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.