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Finding the Fourth Proportional to 7,909.03, 10,916.13 and 6,581.44

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Solution

The fourth proportional to 7,909.03, 10,916.13 and 6,581.44 is: 9,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.03 : 10,916.13 = 6,581.44 : x
  2. Step 2: Convert to fraction form
    7,909.03/10,916.13 = 6,581.44/x
  3. Step 3: Cross multiply
    7,909.03x = 10,916.13 × 6,581.44
  4. Step 4: Simplify right side
    7,909.03x = 71,843,854.63
  5. Step 5: Solve for x
    x = 71,843,854.63/7,909.03
  6. Step 6: Final answer
    x = 9,083.78

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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.