Home / 1,629.40-2,251.38-1,337.80

Finding the Fourth Proportional to 1,629.40, 2,251.38 and 1,337.80

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Solution

The fourth proportional to 1,629.40, 2,251.38 and 1,337.80 is: 1,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.40 : 2,251.38 = 1,337.80 : x
  2. Step 2: Convert to fraction form
    1,629.40/2,251.38 = 1,337.80/x
  3. Step 3: Cross multiply
    1,629.40x = 2,251.38 × 1,337.80
  4. Step 4: Simplify right side
    1,629.40x = 3,011,896.16
  5. Step 5: Solve for x
    x = 3,011,896.16/1,629.40
  6. Step 6: Final answer
    x = 1,848.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.