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Finding the Fourth Proportional to 7,419.92, 10,239.80 and 4,276.08

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Solution

The fourth proportional to 7,419.92, 10,239.80 and 4,276.08 is: 5,901.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.92 : 10,239.80 = 4,276.08 : x
  2. Step 2: Convert to fraction form
    7,419.92/10,239.80 = 4,276.08/x
  3. Step 3: Cross multiply
    7,419.92x = 10,239.80 × 4,276.08
  4. Step 4: Simplify right side
    7,419.92x = 43,786,203.98
  5. Step 5: Solve for x
    x = 43,786,203.98/7,419.92
  6. Step 6: Final answer
    x = 5,901.17

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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.