Home / 1,426.28-2,140.20-992.60

Finding the Fourth Proportional to 1,426.28, 2,140.20 and 992.60

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Solution

The fourth proportional to 1,426.28, 2,140.20 and 992.60 is: 1,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.28 : 2,140.20 = 992.60 : x
  2. Step 2: Convert to fraction form
    1,426.28/2,140.20 = 992.60/x
  3. Step 3: Cross multiply
    1,426.28x = 2,140.20 × 992.60
  4. Step 4: Simplify right side
    1,426.28x = 2,124,362.52
  5. Step 5: Solve for x
    x = 2,124,362.52/1,426.28
  6. Step 6: Final answer
    x = 1,489.44

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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.