Home / 2,123.11-2,929.92-1,178.96

Finding the Fourth Proportional to 2,123.11, 2,929.92 and 1,178.96

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Solution

The fourth proportional to 2,123.11, 2,929.92 and 1,178.96 is: 1,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.11 : 2,929.92 = 1,178.96 : x
  2. Step 2: Convert to fraction form
    2,123.11/2,929.92 = 1,178.96/x
  3. Step 3: Cross multiply
    2,123.11x = 2,929.92 × 1,178.96
  4. Step 4: Simplify right side
    2,123.11x = 3,454,258.48
  5. Step 5: Solve for x
    x = 3,454,258.48/2,123.11
  6. Step 6: Final answer
    x = 1,626.98

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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.