Home / 1,411.14-2,115.63-546.18

Finding the Fourth Proportional to 1,411.14, 2,115.63 and 546.18

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Solution

The fourth proportional to 1,411.14, 2,115.63 and 546.18 is: 818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.14 : 2,115.63 = 546.18 : x
  2. Step 2: Convert to fraction form
    1,411.14/2,115.63 = 546.18/x
  3. Step 3: Cross multiply
    1,411.14x = 2,115.63 × 546.18
  4. Step 4: Simplify right side
    1,411.14x = 1,155,514.79
  5. Step 5: Solve for x
    x = 1,155,514.79/1,411.14
  6. Step 6: Final answer
    x = 818.85

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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.