Home / 1,439.64-1,973.97-1,299.24

Finding the Fourth Proportional to 1,439.64, 1,973.97 and 1,299.24

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Solution

The fourth proportional to 1,439.64, 1,973.97 and 1,299.24 is: 1,781.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.64 : 1,973.97 = 1,299.24 : x
  2. Step 2: Convert to fraction form
    1,439.64/1,973.97 = 1,299.24/x
  3. Step 3: Cross multiply
    1,439.64x = 1,973.97 × 1,299.24
  4. Step 4: Simplify right side
    1,439.64x = 2,564,660.78
  5. Step 5: Solve for x
    x = 2,564,660.78/1,439.64
  6. Step 6: Final answer
    x = 1,781.46

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.