Home / 4,265.92-6,400.20-2,187.40

Finding the Fourth Proportional to 4,265.92, 6,400.20 and 2,187.40

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Solution

The fourth proportional to 4,265.92, 6,400.20 and 2,187.40 is: 3,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,265.92 : 6,400.20 = 2,187.40 : x
  2. Step 2: Convert to fraction form
    4,265.92/6,400.20 = 2,187.40/x
  3. Step 3: Cross multiply
    4,265.92x = 6,400.20 × 2,187.40
  4. Step 4: Simplify right side
    4,265.92x = 13,999,797.48
  5. Step 5: Solve for x
    x = 13,999,797.48/4,265.92
  6. Step 6: Final answer
    x = 3,281.78

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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.