Home / 1,146.40-1,716.90-1,123.18

Finding the Fourth Proportional to 1,146.40, 1,716.90 and 1,123.18

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Solution

The fourth proportional to 1,146.40, 1,716.90 and 1,123.18 is: 1,682.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.40 : 1,716.90 = 1,123.18 : x
  2. Step 2: Convert to fraction form
    1,146.40/1,716.90 = 1,123.18/x
  3. Step 3: Cross multiply
    1,146.40x = 1,716.90 × 1,123.18
  4. Step 4: Simplify right side
    1,146.40x = 1,928,387.74
  5. Step 5: Solve for x
    x = 1,928,387.74/1,146.40
  6. Step 6: Final answer
    x = 1,682.12

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1.5x scale

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.