Home / 1,549.80-2,139.62-1,108.84

Finding the Fourth Proportional to 1,549.80, 2,139.62 and 1,108.84

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Solution

The fourth proportional to 1,549.80, 2,139.62 and 1,108.84 is: 1,530.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.80 : 2,139.62 = 1,108.84 : x
  2. Step 2: Convert to fraction form
    1,549.80/2,139.62 = 1,108.84/x
  3. Step 3: Cross multiply
    1,549.80x = 2,139.62 × 1,108.84
  4. Step 4: Simplify right side
    1,549.80x = 2,372,496.24
  5. Step 5: Solve for x
    x = 2,372,496.24/1,549.80
  6. Step 6: Final answer
    x = 1,530.84

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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.