Home / 1,316.18-1,974.11-1,098.19

Finding the Fourth Proportional to 1,316.18, 1,974.11 and 1,098.19

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Solution

The fourth proportional to 1,316.18, 1,974.11 and 1,098.19 is: 1,647.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.18 : 1,974.11 = 1,098.19 : x
  2. Step 2: Convert to fraction form
    1,316.18/1,974.11 = 1,098.19/x
  3. Step 3: Cross multiply
    1,316.18x = 1,974.11 × 1,098.19
  4. Step 4: Simplify right side
    1,316.18x = 2,167,947.86
  5. Step 5: Solve for x
    x = 2,167,947.86/1,316.18
  6. Step 6: Final answer
    x = 1,647.15

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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.