Home / 3,140.40-4,333.20-2,641.76

Finding the Fourth Proportional to 3,140.40, 4,333.20 and 2,641.76

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Solution

The fourth proportional to 3,140.40, 4,333.20 and 2,641.76 is: 3,645.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.40 : 4,333.20 = 2,641.76 : x
  2. Step 2: Convert to fraction form
    3,140.40/4,333.20 = 2,641.76/x
  3. Step 3: Cross multiply
    3,140.40x = 4,333.20 × 2,641.76
  4. Step 4: Simplify right side
    3,140.40x = 11,447,274.43
  5. Step 5: Solve for x
    x = 11,447,274.43/3,140.40
  6. Step 6: Final answer
    x = 3,645.16

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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.