Home / 2,140.12-3,190.19-2,117.08

Finding the Fourth Proportional to 2,140.12, 3,190.19 and 2,117.08

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Solution

The fourth proportional to 2,140.12, 3,190.19 and 2,117.08 is: 3,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.12 : 3,190.19 = 2,117.08 : x
  2. Step 2: Convert to fraction form
    2,140.12/3,190.19 = 2,117.08/x
  3. Step 3: Cross multiply
    2,140.12x = 3,190.19 × 2,117.08
  4. Step 4: Simplify right side
    2,140.12x = 6,753,887.45
  5. Step 5: Solve for x
    x = 6,753,887.45/2,140.12
  6. Step 6: Final answer
    x = 3,155.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.