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Finding the Fourth Proportional to 1,424.24, 1,964.23 and 926.70

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Solution

The fourth proportional to 1,424.24, 1,964.23 and 926.70 is: 1,278.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.24 : 1,964.23 = 926.70 : x
  2. Step 2: Convert to fraction form
    1,424.24/1,964.23 = 926.70/x
  3. Step 3: Cross multiply
    1,424.24x = 1,964.23 × 926.70
  4. Step 4: Simplify right side
    1,424.24x = 1,820,251.94
  5. Step 5: Solve for x
    x = 1,820,251.94/1,424.24
  6. Step 6: Final answer
    x = 1,278.05

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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.