Home / 8,778.18-12,112.48-5,001.42

Finding the Fourth Proportional to 8,778.18, 12,112.48 and 5,001.42

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Solution

The fourth proportional to 8,778.18, 12,112.48 and 5,001.42 is: 6,901.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.18 : 12,112.48 = 5,001.42 : x
  2. Step 2: Convert to fraction form
    8,778.18/12,112.48 = 5,001.42/x
  3. Step 3: Cross multiply
    8,778.18x = 12,112.48 × 5,001.42
  4. Step 4: Simplify right side
    8,778.18x = 60,579,599.72
  5. Step 5: Solve for x
    x = 60,579,599.72/8,778.18
  6. Step 6: Final answer
    x = 6,901.16

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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.