Home / 3,121.64-4,301.95-2,235.91

Finding the Fourth Proportional to 3,121.64, 4,301.95 and 2,235.91

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Solution

The fourth proportional to 3,121.64, 4,301.95 and 2,235.91 is: 3,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.64 : 4,301.95 = 2,235.91 : x
  2. Step 2: Convert to fraction form
    3,121.64/4,301.95 = 2,235.91/x
  3. Step 3: Cross multiply
    3,121.64x = 4,301.95 × 2,235.91
  4. Step 4: Simplify right side
    3,121.64x = 9,618,773.02
  5. Step 5: Solve for x
    x = 9,618,773.02/3,121.64
  6. Step 6: Final answer
    x = 3,081.32

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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.