Home / 8,701.67-12,005.55-5,115.48

Finding the Fourth Proportional to 8,701.67, 12,005.55 and 5,115.48

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Solution

The fourth proportional to 8,701.67, 12,005.55 and 5,115.48 is: 7,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.67 : 12,005.55 = 5,115.48 : x
  2. Step 2: Convert to fraction form
    8,701.67/12,005.55 = 5,115.48/x
  3. Step 3: Cross multiply
    8,701.67x = 12,005.55 × 5,115.48
  4. Step 4: Simplify right side
    8,701.67x = 61,414,161.24
  5. Step 5: Solve for x
    x = 61,414,161.24/8,701.67
  6. Step 6: Final answer
    x = 7,057.75

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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.