Home / 2,124.15-3,187.18-1,149.11

Finding the Fourth Proportional to 2,124.15, 3,187.18 and 1,149.11

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Solution

The fourth proportional to 2,124.15, 3,187.18 and 1,149.11 is: 1,724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.15 : 3,187.18 = 1,149.11 : x
  2. Step 2: Convert to fraction form
    2,124.15/3,187.18 = 1,149.11/x
  3. Step 3: Cross multiply
    2,124.15x = 3,187.18 × 1,149.11
  4. Step 4: Simplify right side
    2,124.15x = 3,662,420.41
  5. Step 5: Solve for x
    x = 3,662,420.41/2,124.15
  6. Step 6: Final answer
    x = 1,724.18

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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.