Home / 3,428.80-5,143.20-3,061.60

Finding the Fourth Proportional to 3,428.80, 5,143.20 and 3,061.60

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Solution

The fourth proportional to 3,428.80, 5,143.20 and 3,061.60 is: 4,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.80 : 5,143.20 = 3,061.60 : x
  2. Step 2: Convert to fraction form
    3,428.80/5,143.20 = 3,061.60/x
  3. Step 3: Cross multiply
    3,428.80x = 5,143.20 × 3,061.60
  4. Step 4: Simplify right side
    3,428.80x = 15,746,421.12
  5. Step 5: Solve for x
    x = 15,746,421.12/3,428.80
  6. Step 6: Final answer
    x = 4,592.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.