Home / 1,179.19-1,626.94-929.71

Finding the Fourth Proportional to 1,179.19, 1,626.94 and 929.71

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Solution

The fourth proportional to 1,179.19, 1,626.94 and 929.71 is: 1,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.19 : 1,626.94 = 929.71 : x
  2. Step 2: Convert to fraction form
    1,179.19/1,626.94 = 929.71/x
  3. Step 3: Cross multiply
    1,179.19x = 1,626.94 × 929.71
  4. Step 4: Simplify right side
    1,179.19x = 1,512,569.60
  5. Step 5: Solve for x
    x = 1,512,569.60/1,179.19
  6. Step 6: Final answer
    x = 1,282.72

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1.5x scale

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.