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Finding the Fourth Proportional to 7,904.19, 10,909.11 and 5,350.79

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Solution

The fourth proportional to 7,904.19, 10,909.11 and 5,350.79 is: 7,384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.19 : 10,909.11 = 5,350.79 : x
  2. Step 2: Convert to fraction form
    7,904.19/10,909.11 = 5,350.79/x
  3. Step 3: Cross multiply
    7,904.19x = 10,909.11 × 5,350.79
  4. Step 4: Simplify right side
    7,904.19x = 58,372,302.15
  5. Step 5: Solve for x
    x = 58,372,302.15/7,904.19
  6. Step 6: Final answer
    x = 7,384.98

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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.