Home / 2,121.18-2,925.75-2,049.82

Finding the Fourth Proportional to 2,121.18, 2,925.75 and 2,049.82

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Solution

The fourth proportional to 2,121.18, 2,925.75 and 2,049.82 is: 2,827.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.18 : 2,925.75 = 2,049.82 : x
  2. Step 2: Convert to fraction form
    2,121.18/2,925.75 = 2,049.82/x
  3. Step 3: Cross multiply
    2,121.18x = 2,925.75 × 2,049.82
  4. Step 4: Simplify right side
    2,121.18x = 5,997,260.87
  5. Step 5: Solve for x
    x = 5,997,260.87/2,121.18
  6. Step 6: Final answer
    x = 2,827.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.