Home / 2,127.15-3,191.68-1,152.11

Finding the Fourth Proportional to 2,127.15, 3,191.68 and 1,152.11

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Solution

The fourth proportional to 2,127.15, 3,191.68 and 1,152.11 is: 1,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.15 : 3,191.68 = 1,152.11 : x
  2. Step 2: Convert to fraction form
    2,127.15/3,191.68 = 1,152.11/x
  3. Step 3: Cross multiply
    2,127.15x = 3,191.68 × 1,152.11
  4. Step 4: Simplify right side
    2,127.15x = 3,677,166.44
  5. Step 5: Solve for x
    x = 3,677,166.44/2,127.15
  6. Step 6: Final answer
    x = 1,728.68

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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.