Home / 8,780.69-13,172.85-2,937.75

Finding the Fourth Proportional to 8,780.69, 13,172.85 and 2,937.75

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Solution

The fourth proportional to 8,780.69, 13,172.85 and 2,937.75 is: 4,407.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.69 : 13,172.85 = 2,937.75 : x
  2. Step 2: Convert to fraction form
    8,780.69/13,172.85 = 2,937.75/x
  3. Step 3: Cross multiply
    8,780.69x = 13,172.85 × 2,937.75
  4. Step 4: Simplify right side
    8,780.69x = 38,698,540.09
  5. Step 5: Solve for x
    x = 38,698,540.09/8,780.69
  6. Step 6: Final answer
    x = 4,407.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.