Home / 6,140.15-8,470.50-4,151.40

Finding the Fourth Proportional to 6,140.15, 8,470.50 and 4,151.40

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Solution

The fourth proportional to 6,140.15, 8,470.50 and 4,151.40 is: 5,726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.15 : 8,470.50 = 4,151.40 : x
  2. Step 2: Convert to fraction form
    6,140.15/8,470.50 = 4,151.40/x
  3. Step 3: Cross multiply
    6,140.15x = 8,470.50 × 4,151.40
  4. Step 4: Simplify right side
    6,140.15x = 35,164,433.70
  5. Step 5: Solve for x
    x = 35,164,433.70/6,140.15
  6. Step 6: Final answer
    x = 5,726.97

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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.