Home / 1,561.85-2,345.81-1,149.36

Finding the Fourth Proportional to 1,561.85, 2,345.81 and 1,149.36

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Solution

The fourth proportional to 1,561.85, 2,345.81 and 1,149.36 is: 1,726.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.85 : 2,345.81 = 1,149.36 : x
  2. Step 2: Convert to fraction form
    1,561.85/2,345.81 = 1,149.36/x
  3. Step 3: Cross multiply
    1,561.85x = 2,345.81 × 1,149.36
  4. Step 4: Simplify right side
    1,561.85x = 2,696,174.43
  5. Step 5: Solve for x
    x = 2,696,174.43/1,561.85
  6. Step 6: Final answer
    x = 1,726.28

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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.