Home / 6,862.60-9,470.40-3,718.77

Finding the Fourth Proportional to 6,862.60, 9,470.40 and 3,718.77

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Solution

The fourth proportional to 6,862.60, 9,470.40 and 3,718.77 is: 5,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.60 : 9,470.40 = 3,718.77 : x
  2. Step 2: Convert to fraction form
    6,862.60/9,470.40 = 3,718.77/x
  3. Step 3: Cross multiply
    6,862.60x = 9,470.40 × 3,718.77
  4. Step 4: Simplify right side
    6,862.60x = 35,218,173.46
  5. Step 5: Solve for x
    x = 35,218,173.46/6,862.60
  6. Step 6: Final answer
    x = 5,131.90

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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.