Home / 1,426.68-2,140.22-439.46

Finding the Fourth Proportional to 1,426.68, 2,140.22 and 439.46

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Solution

The fourth proportional to 1,426.68, 2,140.22 and 439.46 is: 659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.68 : 2,140.22 = 439.46 : x
  2. Step 2: Convert to fraction form
    1,426.68/2,140.22 = 439.46/x
  3. Step 3: Cross multiply
    1,426.68x = 2,140.22 × 439.46
  4. Step 4: Simplify right side
    1,426.68x = 940,539.50
  5. Step 5: Solve for x
    x = 940,539.50/1,426.68
  6. Step 6: Final answer
    x = 659.25

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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.