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Finding the Fourth Proportional to 8,398.54, 11,585.15 and 5,040.28

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Solution

The fourth proportional to 8,398.54, 11,585.15 and 5,040.28 is: 6,952.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.54 : 11,585.15 = 5,040.28 : x
  2. Step 2: Convert to fraction form
    8,398.54/11,585.15 = 5,040.28/x
  3. Step 3: Cross multiply
    8,398.54x = 11,585.15 × 5,040.28
  4. Step 4: Simplify right side
    8,398.54x = 58,392,399.84
  5. Step 5: Solve for x
    x = 58,392,399.84/8,398.54
  6. Step 6: Final answer
    x = 6,952.68

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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.