Home / 8,740.72-13,115.31-4,358.80

Finding the Fourth Proportional to 8,740.72, 13,115.31 and 4,358.80

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Solution

The fourth proportional to 8,740.72, 13,115.31 and 4,358.80 is: 6,540.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.72 : 13,115.31 = 4,358.80 : x
  2. Step 2: Convert to fraction form
    8,740.72/13,115.31 = 4,358.80/x
  3. Step 3: Cross multiply
    8,740.72x = 13,115.31 × 4,358.80
  4. Step 4: Simplify right side
    8,740.72x = 57,167,013.23
  5. Step 5: Solve for x
    x = 57,167,013.23/8,740.72
  6. Step 6: Final answer
    x = 6,540.31

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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.