Home / 1,938.40-2,674.02-1,229.02

Finding the Fourth Proportional to 1,938.40, 2,674.02 and 1,229.02

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Solution

The fourth proportional to 1,938.40, 2,674.02 and 1,229.02 is: 1,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.40 : 2,674.02 = 1,229.02 : x
  2. Step 2: Convert to fraction form
    1,938.40/2,674.02 = 1,229.02/x
  3. Step 3: Cross multiply
    1,938.40x = 2,674.02 × 1,229.02
  4. Step 4: Simplify right side
    1,938.40x = 3,286,424.06
  5. Step 5: Solve for x
    x = 3,286,424.06/1,938.40
  6. Step 6: Final answer
    x = 1,695.43

Related Problems

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Half scale
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Double scale
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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.