Home / 1,437.11-2,155.60-411.11

Finding the Fourth Proportional to 1,437.11, 2,155.60 and 411.11

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Solution

The fourth proportional to 1,437.11, 2,155.60 and 411.11 is: 616.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.11 : 2,155.60 = 411.11 : x
  2. Step 2: Convert to fraction form
    1,437.11/2,155.60 = 411.11/x
  3. Step 3: Cross multiply
    1,437.11x = 2,155.60 × 411.11
  4. Step 4: Simplify right side
    1,437.11x = 886,188.72
  5. Step 5: Solve for x
    x = 886,188.72/1,437.11
  6. Step 6: Final answer
    x = 616.65

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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.