Home / 1,216.32-1,676.61-1,068.70

Finding the Fourth Proportional to 1,216.32, 1,676.61 and 1,068.70

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Solution

The fourth proportional to 1,216.32, 1,676.61 and 1,068.70 is: 1,473.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.32 : 1,676.61 = 1,068.70 : x
  2. Step 2: Convert to fraction form
    1,216.32/1,676.61 = 1,068.70/x
  3. Step 3: Cross multiply
    1,216.32x = 1,676.61 × 1,068.70
  4. Step 4: Simplify right side
    1,216.32x = 1,791,793.11
  5. Step 5: Solve for x
    x = 1,791,793.11/1,216.32
  6. Step 6: Final answer
    x = 1,473.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.