Home / 3,430.79-5,145.15-1,456.38

Finding the Fourth Proportional to 3,430.79, 5,145.15 and 1,456.38

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Solution

The fourth proportional to 3,430.79, 5,145.15 and 1,456.38 is: 2,184.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.79 : 5,145.15 = 1,456.38 : x
  2. Step 2: Convert to fraction form
    3,430.79/5,145.15 = 1,456.38/x
  3. Step 3: Cross multiply
    3,430.79x = 5,145.15 × 1,456.38
  4. Step 4: Simplify right side
    3,430.79x = 7,493,318.31
  5. Step 5: Solve for x
    x = 7,493,318.31/3,430.79
  6. Step 6: Final answer
    x = 2,184.14

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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.