Home / 4,321.20-5,954.93-3,140.40

Finding the Fourth Proportional to 4,321.20, 5,954.93 and 3,140.40

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Solution

The fourth proportional to 4,321.20, 5,954.93 and 3,140.40 is: 4,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321.20 : 5,954.93 = 3,140.40 : x
  2. Step 2: Convert to fraction form
    4,321.20/5,954.93 = 3,140.40/x
  3. Step 3: Cross multiply
    4,321.20x = 5,954.93 × 3,140.40
  4. Step 4: Simplify right side
    4,321.20x = 18,700,862.17
  5. Step 5: Solve for x
    x = 18,700,862.17/4,321.20
  6. Step 6: Final answer
    x = 4,327.70

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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.