Home / 1,423.14-2,134.76-545.54

Finding the Fourth Proportional to 1,423.14, 2,134.76 and 545.54

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Solution

The fourth proportional to 1,423.14, 2,134.76 and 545.54 is: 818.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.14 : 2,134.76 = 545.54 : x
  2. Step 2: Convert to fraction form
    1,423.14/2,134.76 = 545.54/x
  3. Step 3: Cross multiply
    1,423.14x = 2,134.76 × 545.54
  4. Step 4: Simplify right side
    1,423.14x = 1,164,583.57
  5. Step 5: Solve for x
    x = 1,164,583.57/1,423.14
  6. Step 6: Final answer
    x = 818.32

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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.