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Finding the Fourth Proportional to 7,904.69, 10,909.80 and 5,351.29

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Solution

The fourth proportional to 7,904.69, 10,909.80 and 5,351.29 is: 7,385.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.69 : 10,909.80 = 5,351.29 : x
  2. Step 2: Convert to fraction form
    7,904.69/10,909.80 = 5,351.29/x
  3. Step 3: Cross multiply
    7,904.69x = 10,909.80 × 5,351.29
  4. Step 4: Simplify right side
    7,904.69x = 58,381,449.09
  5. Step 5: Solve for x
    x = 58,381,449.09/7,904.69
  6. Step 6: Final answer
    x = 7,385.67

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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.