Home / 1,411.20-2,116.09-437.18

Finding the Fourth Proportional to 1,411.20, 2,116.09 and 437.18

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Solution

The fourth proportional to 1,411.20, 2,116.09 and 437.18 is: 655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.20 : 2,116.09 = 437.18 : x
  2. Step 2: Convert to fraction form
    1,411.20/2,116.09 = 437.18/x
  3. Step 3: Cross multiply
    1,411.20x = 2,116.09 × 437.18
  4. Step 4: Simplify right side
    1,411.20x = 925,112.23
  5. Step 5: Solve for x
    x = 925,112.23/1,411.20
  6. Step 6: Final answer
    x = 655.55

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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.