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Finding the Fourth Proportional to 5,288.88, 7,886.76 and 4,919.52

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Solution

The fourth proportional to 5,288.88, 7,886.76 and 4,919.52 is: 7,335.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,288.88 : 7,886.76 = 4,919.52 : x
  2. Step 2: Convert to fraction form
    5,288.88/7,886.76 = 4,919.52/x
  3. Step 3: Cross multiply
    5,288.88x = 7,886.76 × 4,919.52
  4. Step 4: Simplify right side
    5,288.88x = 38,799,073.56
  5. Step 5: Solve for x
    x = 38,799,073.56/5,288.88
  6. Step 6: Final answer
    x = 7,335.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.