Home / 1,423.18-2,134.99-545.64

Finding the Fourth Proportional to 1,423.18, 2,134.99 and 545.64

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Solution

The fourth proportional to 1,423.18, 2,134.99 and 545.64 is: 818.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.18 : 2,134.99 = 545.64 : x
  2. Step 2: Convert to fraction form
    1,423.18/2,134.99 = 545.64/x
  3. Step 3: Cross multiply
    1,423.18x = 2,134.99 × 545.64
  4. Step 4: Simplify right side
    1,423.18x = 1,164,935.94
  5. Step 5: Solve for x
    x = 1,164,935.94/1,423.18
  6. Step 6: Final answer
    x = 818.55

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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.