Home / 8,780.25-12,116.75-4,801.39

Finding the Fourth Proportional to 8,780.25, 12,116.75 and 4,801.39

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Solution

The fourth proportional to 8,780.25, 12,116.75 and 4,801.39 is: 6,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.25 : 12,116.75 = 4,801.39 : x
  2. Step 2: Convert to fraction form
    8,780.25/12,116.75 = 4,801.39/x
  3. Step 3: Cross multiply
    8,780.25x = 12,116.75 × 4,801.39
  4. Step 4: Simplify right side
    8,780.25x = 58,177,218.28
  5. Step 5: Solve for x
    x = 58,177,218.28/8,780.25
  6. Step 6: Final answer
    x = 6,625.92

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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.