Home / 6,403.20-8,836.26-3,608.70

Finding the Fourth Proportional to 6,403.20, 8,836.26 and 3,608.70

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Solution

The fourth proportional to 6,403.20, 8,836.26 and 3,608.70 is: 4,979.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,403.20 : 8,836.26 = 3,608.70 : x
  2. Step 2: Convert to fraction form
    6,403.20/8,836.26 = 3,608.70/x
  3. Step 3: Cross multiply
    6,403.20x = 8,836.26 × 3,608.70
  4. Step 4: Simplify right side
    6,403.20x = 31,887,411.46
  5. Step 5: Solve for x
    x = 31,887,411.46/6,403.20
  6. Step 6: Final answer
    x = 4,979.92

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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.