Home / 1,439.24-2,161.98-862.44

Finding the Fourth Proportional to 1,439.24, 2,161.98 and 862.44

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Solution

The fourth proportional to 1,439.24, 2,161.98 and 862.44 is: 1,295.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.24 : 2,161.98 = 862.44 : x
  2. Step 2: Convert to fraction form
    1,439.24/2,161.98 = 862.44/x
  3. Step 3: Cross multiply
    1,439.24x = 2,161.98 × 862.44
  4. Step 4: Simplify right side
    1,439.24x = 1,864,578.03
  5. Step 5: Solve for x
    x = 1,864,578.03/1,439.24
  6. Step 6: Final answer
    x = 1,295.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.