Home / 1,411.19-2,116.86-545.49

Finding the Fourth Proportional to 1,411.19, 2,116.86 and 545.49

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Solution

The fourth proportional to 1,411.19, 2,116.86 and 545.49 is: 818.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.19 : 2,116.86 = 545.49 : x
  2. Step 2: Convert to fraction form
    1,411.19/2,116.86 = 545.49/x
  3. Step 3: Cross multiply
    1,411.19x = 2,116.86 × 545.49
  4. Step 4: Simplify right side
    1,411.19x = 1,154,725.96
  5. Step 5: Solve for x
    x = 1,154,725.96/1,411.19
  6. Step 6: Final answer
    x = 818.26

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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.