Home / 3,502.40-5,253.80-1,422.10

Finding the Fourth Proportional to 3,502.40, 5,253.80 and 1,422.10

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Solution

The fourth proportional to 3,502.40, 5,253.80 and 1,422.10 is: 2,133.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,502.40 : 5,253.80 = 1,422.10 : x
  2. Step 2: Convert to fraction form
    3,502.40/5,253.80 = 1,422.10/x
  3. Step 3: Cross multiply
    3,502.40x = 5,253.80 × 1,422.10
  4. Step 4: Simplify right side
    3,502.40x = 7,471,428.98
  5. Step 5: Solve for x
    x = 7,471,428.98/3,502.40
  6. Step 6: Final answer
    x = 2,133.23

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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.