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Finding the Fourth Proportional to 9,370.50, 12,929.94 and 7,959.84

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Solution

The fourth proportional to 9,370.50, 12,929.94 and 7,959.84 is: 10,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.50 : 12,929.94 = 7,959.84 : x
  2. Step 2: Convert to fraction form
    9,370.50/12,929.94 = 7,959.84/x
  3. Step 3: Cross multiply
    9,370.50x = 12,929.94 × 7,959.84
  4. Step 4: Simplify right side
    9,370.50x = 102,920,253.61
  5. Step 5: Solve for x
    x = 102,920,253.61/9,370.50
  6. Step 6: Final answer
    x = 10,983.43

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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.