Home / 1,292.37-1,938.25-459.37

Finding the Fourth Proportional to 1,292.37, 1,938.25 and 459.37

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Solution

The fourth proportional to 1,292.37, 1,938.25 and 459.37 is: 688.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.37 : 1,938.25 = 459.37 : x
  2. Step 2: Convert to fraction form
    1,292.37/1,938.25 = 459.37/x
  3. Step 3: Cross multiply
    1,292.37x = 1,938.25 × 459.37
  4. Step 4: Simplify right side
    1,292.37x = 890,373.90
  5. Step 5: Solve for x
    x = 890,373.90/1,292.37
  6. Step 6: Final answer
    x = 688.95

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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.