Home / 7,966.74-11,931.57-7,689.90

Finding the Fourth Proportional to 7,966.74, 11,931.57 and 7,689.90

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Solution

The fourth proportional to 7,966.74, 11,931.57 and 7,689.90 is: 11,516.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,966.74 : 11,931.57 = 7,689.90 : x
  2. Step 2: Convert to fraction form
    7,966.74/11,931.57 = 7,689.90/x
  3. Step 3: Cross multiply
    7,966.74x = 11,931.57 × 7,689.90
  4. Step 4: Simplify right side
    7,966.74x = 91,752,580.14
  5. Step 5: Solve for x
    x = 91,752,580.14/7,966.74
  6. Step 6: Final answer
    x = 11,516.95

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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.