Home / 8,717.95-12,029.87-5,180.48

Finding the Fourth Proportional to 8,717.95, 12,029.87 and 5,180.48

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Solution

The fourth proportional to 8,717.95, 12,029.87 and 5,180.48 is: 7,148.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.95 : 12,029.87 = 5,180.48 : x
  2. Step 2: Convert to fraction form
    8,717.95/12,029.87 = 5,180.48/x
  3. Step 3: Cross multiply
    8,717.95x = 12,029.87 × 5,180.48
  4. Step 4: Simplify right side
    8,717.95x = 62,320,414.89
  5. Step 5: Solve for x
    x = 62,320,414.89/8,717.95
  6. Step 6: Final answer
    x = 7,148.52

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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.