Home / 5,151.20-7,712.95-4,237.78

Finding the Fourth Proportional to 5,151.20, 7,712.95 and 4,237.78

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Solution

The fourth proportional to 5,151.20, 7,712.95 and 4,237.78 is: 6,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.20 : 7,712.95 = 4,237.78 : x
  2. Step 2: Convert to fraction form
    5,151.20/7,712.95 = 4,237.78/x
  3. Step 3: Cross multiply
    5,151.20x = 7,712.95 × 4,237.78
  4. Step 4: Simplify right side
    5,151.20x = 32,685,785.25
  5. Step 5: Solve for x
    x = 32,685,785.25/5,151.20
  6. Step 6: Final answer
    x = 6,345.28

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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.