Home / 1,314.85-1,974.99-1,271.11

Finding the Fourth Proportional to 1,314.85, 1,974.99 and 1,271.11

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Solution

The fourth proportional to 1,314.85, 1,974.99 and 1,271.11 is: 1,909.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.85 : 1,974.99 = 1,271.11 : x
  2. Step 2: Convert to fraction form
    1,314.85/1,974.99 = 1,271.11/x
  3. Step 3: Cross multiply
    1,314.85x = 1,974.99 × 1,271.11
  4. Step 4: Simplify right side
    1,314.85x = 2,510,429.54
  5. Step 5: Solve for x
    x = 2,510,429.54/1,314.85
  6. Step 6: Final answer
    x = 1,909.29

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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.