Home / 8,138.40-11,232.48-4,781.52

Finding the Fourth Proportional to 8,138.40, 11,232.48 and 4,781.52

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Solution

The fourth proportional to 8,138.40, 11,232.48 and 4,781.52 is: 6,599.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.40 : 11,232.48 = 4,781.52 : x
  2. Step 2: Convert to fraction form
    8,138.40/11,232.48 = 4,781.52/x
  3. Step 3: Cross multiply
    8,138.40x = 11,232.48 × 4,781.52
  4. Step 4: Simplify right side
    8,138.40x = 53,708,327.77
  5. Step 5: Solve for x
    x = 53,708,327.77/8,138.40
  6. Step 6: Final answer
    x = 6,599.37

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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.