Home / 2,165.18-3,248.67-1,191.20

Finding the Fourth Proportional to 2,165.18, 3,248.67 and 1,191.20

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Solution

The fourth proportional to 2,165.18, 3,248.67 and 1,191.20 is: 1,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.18 : 3,248.67 = 1,191.20 : x
  2. Step 2: Convert to fraction form
    2,165.18/3,248.67 = 1,191.20/x
  3. Step 3: Cross multiply
    2,165.18x = 3,248.67 × 1,191.20
  4. Step 4: Simplify right side
    2,165.18x = 3,869,815.70
  5. Step 5: Solve for x
    x = 3,869,815.70/2,165.18
  6. Step 6: Final answer
    x = 1,787.30

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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.