Home / 1,437.13-2,155.70-411.13

Finding the Fourth Proportional to 1,437.13, 2,155.70 and 411.13

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Solution

The fourth proportional to 1,437.13, 2,155.70 and 411.13 is: 616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.13 : 2,155.70 = 411.13 : x
  2. Step 2: Convert to fraction form
    1,437.13/2,155.70 = 411.13/x
  3. Step 3: Cross multiply
    1,437.13x = 2,155.70 × 411.13
  4. Step 4: Simplify right side
    1,437.13x = 886,272.94
  5. Step 5: Solve for x
    x = 886,272.94/1,437.13
  6. Step 6: Final answer
    x = 616.70

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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.