Home / 2,321.12-3,203.15-1,258.89

Finding the Fourth Proportional to 2,321.12, 3,203.15 and 1,258.89

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Solution

The fourth proportional to 2,321.12, 3,203.15 and 1,258.89 is: 1,737.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.12 : 3,203.15 = 1,258.89 : x
  2. Step 2: Convert to fraction form
    2,321.12/3,203.15 = 1,258.89/x
  3. Step 3: Cross multiply
    2,321.12x = 3,203.15 × 1,258.89
  4. Step 4: Simplify right side
    2,321.12x = 4,032,395.20
  5. Step 5: Solve for x
    x = 4,032,395.20/2,321.12
  6. Step 6: Final answer
    x = 1,737.26

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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.