Home / 1,422.89-2,134.29-692.95

Finding the Fourth Proportional to 1,422.89, 2,134.29 and 692.95

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Solution

The fourth proportional to 1,422.89, 2,134.29 and 692.95 is: 1,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.89 : 2,134.29 = 692.95 : x
  2. Step 2: Convert to fraction form
    1,422.89/2,134.29 = 692.95/x
  3. Step 3: Cross multiply
    1,422.89x = 2,134.29 × 692.95
  4. Step 4: Simplify right side
    1,422.89x = 1,478,956.26
  5. Step 5: Solve for x
    x = 1,478,956.26/1,422.89
  6. Step 6: Final answer
    x = 1,039.40

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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.