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Finding the Fourth Proportional to 8,934.30, 12,330.97 and 5,156.95

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Solution

The fourth proportional to 8,934.30, 12,330.97 and 5,156.95 is: 7,117.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.30 : 12,330.97 = 5,156.95 : x
  2. Step 2: Convert to fraction form
    8,934.30/12,330.97 = 5,156.95/x
  3. Step 3: Cross multiply
    8,934.30x = 12,330.97 × 5,156.95
  4. Step 4: Simplify right side
    8,934.30x = 63,590,175.14
  5. Step 5: Solve for x
    x = 63,590,175.14/8,934.30
  6. Step 6: Final answer
    x = 7,117.53

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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.