Home / 1,423.79-1,965.20-1,276.17

Finding the Fourth Proportional to 1,423.79, 1,965.20 and 1,276.17

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Solution

The fourth proportional to 1,423.79, 1,965.20 and 1,276.17 is: 1,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.79 : 1,965.20 = 1,276.17 : x
  2. Step 2: Convert to fraction form
    1,423.79/1,965.20 = 1,276.17/x
  3. Step 3: Cross multiply
    1,423.79x = 1,965.20 × 1,276.17
  4. Step 4: Simplify right side
    1,423.79x = 2,507,929.28
  5. Step 5: Solve for x
    x = 2,507,929.28/1,423.79
  6. Step 6: Final answer
    x = 1,761.45

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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.