Home / 1,432.36-2,149.92-692.49

Finding the Fourth Proportional to 1,432.36, 2,149.92 and 692.49

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Solution

The fourth proportional to 1,432.36, 2,149.92 and 692.49 is: 1,039.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.36 : 2,149.92 = 692.49 : x
  2. Step 2: Convert to fraction form
    1,432.36/2,149.92 = 692.49/x
  3. Step 3: Cross multiply
    1,432.36x = 2,149.92 × 692.49
  4. Step 4: Simplify right side
    1,432.36x = 1,488,798.10
  5. Step 5: Solve for x
    x = 1,488,798.10/1,432.36
  6. Step 6: Final answer
    x = 1,039.41

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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.