Home / 2,173.80-3,261.30-876.18

Finding the Fourth Proportional to 2,173.80, 3,261.30 and 876.18

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Solution

The fourth proportional to 2,173.80, 3,261.30 and 876.18 is: 1,314.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.80 : 3,261.30 = 876.18 : x
  2. Step 2: Convert to fraction form
    2,173.80/3,261.30 = 876.18/x
  3. Step 3: Cross multiply
    2,173.80x = 3,261.30 × 876.18
  4. Step 4: Simplify right side
    2,173.80x = 2,857,485.83
  5. Step 5: Solve for x
    x = 2,857,485.83/2,173.80
  6. Step 6: Final answer
    x = 1,314.51

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1.5x scale

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.