Home / 3,419.16-5,128.82-1,569.78

Finding the Fourth Proportional to 3,419.16, 5,128.82 and 1,569.78

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Solution

The fourth proportional to 3,419.16, 5,128.82 and 1,569.78 is: 2,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.16 : 5,128.82 = 1,569.78 : x
  2. Step 2: Convert to fraction form
    3,419.16/5,128.82 = 1,569.78/x
  3. Step 3: Cross multiply
    3,419.16x = 5,128.82 × 1,569.78
  4. Step 4: Simplify right side
    3,419.16x = 8,051,117.10
  5. Step 5: Solve for x
    x = 8,051,117.10/3,419.16
  6. Step 6: Final answer
    x = 2,354.70

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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.