Home / 1,426.55-2,139.28-501.80

Finding the Fourth Proportional to 1,426.55, 2,139.28 and 501.80

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Solution

The fourth proportional to 1,426.55, 2,139.28 and 501.80 is: 752.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.55 : 2,139.28 = 501.80 : x
  2. Step 2: Convert to fraction form
    1,426.55/2,139.28 = 501.80/x
  3. Step 3: Cross multiply
    1,426.55x = 2,139.28 × 501.80
  4. Step 4: Simplify right side
    1,426.55x = 1,073,478.75
  5. Step 5: Solve for x
    x = 1,073,478.75/1,426.55
  6. Step 6: Final answer
    x = 752.50

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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.