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Finding the Fourth Proportional to 7,909.03, 10,913.70 and 4,371.76

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Solution

The fourth proportional to 7,909.03, 10,913.70 and 4,371.76 is: 6,032.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.03 : 10,913.70 = 4,371.76 : x
  2. Step 2: Convert to fraction form
    7,909.03/10,913.70 = 4,371.76/x
  3. Step 3: Cross multiply
    7,909.03x = 10,913.70 × 4,371.76
  4. Step 4: Simplify right side
    7,909.03x = 47,712,077.11
  5. Step 5: Solve for x
    x = 47,712,077.11/7,909.03
  6. Step 6: Final answer
    x = 6,032.61

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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.