Home / 3,083.60-4,258.36-2,638.90

Finding the Fourth Proportional to 3,083.60, 4,258.36 and 2,638.90

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Solution

The fourth proportional to 3,083.60, 4,258.36 and 2,638.90 is: 3,644.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,083.60 : 4,258.36 = 2,638.90 : x
  2. Step 2: Convert to fraction form
    3,083.60/4,258.36 = 2,638.90/x
  3. Step 3: Cross multiply
    3,083.60x = 4,258.36 × 2,638.90
  4. Step 4: Simplify right side
    3,083.60x = 11,237,386.20
  5. Step 5: Solve for x
    x = 11,237,386.20/3,083.60
  6. Step 6: Final answer
    x = 3,644.24

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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.