Home / 8,715.20-12,026.07-5,177.72

Finding the Fourth Proportional to 8,715.20, 12,026.07 and 5,177.72

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Solution

The fourth proportional to 8,715.20, 12,026.07 and 5,177.72 is: 7,144.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.20 : 12,026.07 = 5,177.72 : x
  2. Step 2: Convert to fraction form
    8,715.20/12,026.07 = 5,177.72/x
  3. Step 3: Cross multiply
    8,715.20x = 12,026.07 × 5,177.72
  4. Step 4: Simplify right side
    8,715.20x = 62,267,653.23
  5. Step 5: Solve for x
    x = 62,267,653.23/8,715.20
  6. Step 6: Final answer
    x = 7,144.72

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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.