Home / 3,426.64-5,140.86-1,478.38

Finding the Fourth Proportional to 3,426.64, 5,140.86 and 1,478.38

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Solution

The fourth proportional to 3,426.64, 5,140.86 and 1,478.38 is: 2,217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.64 : 5,140.86 = 1,478.38 : x
  2. Step 2: Convert to fraction form
    3,426.64/5,140.86 = 1,478.38/x
  3. Step 3: Cross multiply
    3,426.64x = 5,140.86 × 1,478.38
  4. Step 4: Simplify right side
    3,426.64x = 7,600,144.61
  5. Step 5: Solve for x
    x = 7,600,144.61/3,426.64
  6. Step 6: Final answer
    x = 2,217.96

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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.