Home / 4,640.86-6,397.68-2,869.39

Finding the Fourth Proportional to 4,640.86, 6,397.68 and 2,869.39

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Solution

The fourth proportional to 4,640.86, 6,397.68 and 2,869.39 is: 3,955.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640.86 : 6,397.68 = 2,869.39 : x
  2. Step 2: Convert to fraction form
    4,640.86/6,397.68 = 2,869.39/x
  3. Step 3: Cross multiply
    4,640.86x = 6,397.68 × 2,869.39
  4. Step 4: Simplify right side
    4,640.86x = 18,357,439.02
  5. Step 5: Solve for x
    x = 18,357,439.02/4,640.86
  6. Step 6: Final answer
    x = 3,955.61

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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.