Home / 3,101.40-4,281.60-2,391.69

Finding the Fourth Proportional to 3,101.40, 4,281.60 and 2,391.69

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Solution

The fourth proportional to 3,101.40, 4,281.60 and 2,391.69 is: 3,301.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.40 : 4,281.60 = 2,391.69 : x
  2. Step 2: Convert to fraction form
    3,101.40/4,281.60 = 2,391.69/x
  3. Step 3: Cross multiply
    3,101.40x = 4,281.60 × 2,391.69
  4. Step 4: Simplify right side
    3,101.40x = 10,240,259.90
  5. Step 5: Solve for x
    x = 10,240,259.90/3,101.40
  6. Step 6: Final answer
    x = 3,301.82

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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.