Home / 8,781.88-12,122.95-5,599.44

Finding the Fourth Proportional to 8,781.88, 12,122.95 and 5,599.44

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Solution

The fourth proportional to 8,781.88, 12,122.95 and 5,599.44 is: 7,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.88 : 12,122.95 = 5,599.44 : x
  2. Step 2: Convert to fraction form
    8,781.88/12,122.95 = 5,599.44/x
  3. Step 3: Cross multiply
    8,781.88x = 12,122.95 × 5,599.44
  4. Step 4: Simplify right side
    8,781.88x = 67,881,721.07
  5. Step 5: Solve for x
    x = 67,881,721.07/8,781.88
  6. Step 6: Final answer
    x = 7,729.75

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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.