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Finding the Fourth Proportional to 7,901.92, 10,920.27 and 6,483.34

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Solution

The fourth proportional to 7,901.92, 10,920.27 and 6,483.34 is: 8,959.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.92 : 10,920.27 = 6,483.34 : x
  2. Step 2: Convert to fraction form
    7,901.92/10,920.27 = 6,483.34/x
  3. Step 3: Cross multiply
    7,901.92x = 10,920.27 × 6,483.34
  4. Step 4: Simplify right side
    7,901.92x = 70,799,823.30
  5. Step 5: Solve for x
    x = 70,799,823.30/7,901.92
  6. Step 6: Final answer
    x = 8,959.83

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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.