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Finding the Fourth Proportional to 8,648.28, 11,934.54 and 5,111.28

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Solution

The fourth proportional to 8,648.28, 11,934.54 and 5,111.28 is: 7,053.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.28 : 11,934.54 = 5,111.28 : x
  2. Step 2: Convert to fraction form
    8,648.28/11,934.54 = 5,111.28/x
  3. Step 3: Cross multiply
    8,648.28x = 11,934.54 × 5,111.28
  4. Step 4: Simplify right side
    8,648.28x = 61,000,775.61
  5. Step 5: Solve for x
    x = 61,000,775.61/8,648.28
  6. Step 6: Final answer
    x = 7,053.52

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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.