Home / 1,398.16-2,104.08-1,263.88

Finding the Fourth Proportional to 1,398.16, 2,104.08 and 1,263.88

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Solution

The fourth proportional to 1,398.16, 2,104.08 and 1,263.88 is: 1,902.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.16 : 2,104.08 = 1,263.88 : x
  2. Step 2: Convert to fraction form
    1,398.16/2,104.08 = 1,263.88/x
  3. Step 3: Cross multiply
    1,398.16x = 2,104.08 × 1,263.88
  4. Step 4: Simplify right side
    1,398.16x = 2,659,304.63
  5. Step 5: Solve for x
    x = 2,659,304.63/1,398.16
  6. Step 6: Final answer
    x = 1,902.00

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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.