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Finding the Fourth Proportional to 1,546.24, 2,133.80 and 956.78

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Solution

The fourth proportional to 1,546.24, 2,133.80 and 956.78 is: 1,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,546.24 : 2,133.80 = 956.78 : x
  2. Step 2: Convert to fraction form
    1,546.24/2,133.80 = 956.78/x
  3. Step 3: Cross multiply
    1,546.24x = 2,133.80 × 956.78
  4. Step 4: Simplify right side
    1,546.24x = 2,041,577.16
  5. Step 5: Solve for x
    x = 2,041,577.16/1,546.24
  6. Step 6: Final answer
    x = 1,320.35

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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.