Home / 1,418.38-2,117.18-1,314.16

Finding the Fourth Proportional to 1,418.38, 2,117.18 and 1,314.16

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Solution

The fourth proportional to 1,418.38, 2,117.18 and 1,314.16 is: 1,961.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.38 : 2,117.18 = 1,314.16 : x
  2. Step 2: Convert to fraction form
    1,418.38/2,117.18 = 1,314.16/x
  3. Step 3: Cross multiply
    1,418.38x = 2,117.18 × 1,314.16
  4. Step 4: Simplify right side
    1,418.38x = 2,782,311.26
  5. Step 5: Solve for x
    x = 2,782,311.26/1,418.38
  6. Step 6: Final answer
    x = 1,961.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.