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Finding the Fourth Proportional to 2,865.83, 3,955.25 and 1,671.21

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Solution

The fourth proportional to 2,865.83, 3,955.25 and 1,671.21 is: 2,306.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.83 : 3,955.25 = 1,671.21 : x
  2. Step 2: Convert to fraction form
    2,865.83/3,955.25 = 1,671.21/x
  3. Step 3: Cross multiply
    2,865.83x = 3,955.25 × 1,671.21
  4. Step 4: Simplify right side
    2,865.83x = 6,610,045.00
  5. Step 5: Solve for x
    x = 6,610,045.00/2,865.83
  6. Step 6: Final answer
    x = 2,306.51

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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.