Home / 1,938.28-2,674.20-1,239.52

Finding the Fourth Proportional to 1,938.28, 2,674.20 and 1,239.52

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Solution

The fourth proportional to 1,938.28, 2,674.20 and 1,239.52 is: 1,710.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.28 : 2,674.20 = 1,239.52 : x
  2. Step 2: Convert to fraction form
    1,938.28/2,674.20 = 1,239.52/x
  3. Step 3: Cross multiply
    1,938.28x = 2,674.20 × 1,239.52
  4. Step 4: Simplify right side
    1,938.28x = 3,314,724.38
  5. Step 5: Solve for x
    x = 3,314,724.38/1,938.28
  6. Step 6: Final answer
    x = 1,710.14

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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.