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Finding the Fourth Proportional to 7,909.99, 10,916.51 and 4,373.87

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Solution

The fourth proportional to 7,909.99, 10,916.51 and 4,373.87 is: 6,036.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.99 : 10,916.51 = 4,373.87 : x
  2. Step 2: Convert to fraction form
    7,909.99/10,916.51 = 4,373.87/x
  3. Step 3: Cross multiply
    7,909.99x = 10,916.51 × 4,373.87
  4. Step 4: Simplify right side
    7,909.99x = 47,747,319.14
  5. Step 5: Solve for x
    x = 47,747,319.14/7,909.99
  6. Step 6: Final answer
    x = 6,036.33

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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.