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Finding the Fourth Proportional to 7,909.70, 10,916.03 and 4,374.05

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Solution

The fourth proportional to 7,909.70, 10,916.03 and 4,374.05 is: 6,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.70 : 10,916.03 = 4,374.05 : x
  2. Step 2: Convert to fraction form
    7,909.70/10,916.03 = 4,374.05/x
  3. Step 3: Cross multiply
    7,909.70x = 10,916.03 × 4,374.05
  4. Step 4: Simplify right side
    7,909.70x = 47,747,217.38
  5. Step 5: Solve for x
    x = 47,747,217.38/7,909.70
  6. Step 6: Final answer
    x = 6,036.54

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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.