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Finding the Fourth Proportional to 3,340.80, 5,030.40 and 2,572.80

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Solution

The fourth proportional to 3,340.80, 5,030.40 and 2,572.80 is: 3,873.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.80 : 5,030.40 = 2,572.80 : x
  2. Step 2: Convert to fraction form
    3,340.80/5,030.40 = 2,572.80/x
  3. Step 3: Cross multiply
    3,340.80x = 5,030.40 × 2,572.80
  4. Step 4: Simplify right side
    3,340.80x = 12,942,213.12
  5. Step 5: Solve for x
    x = 12,942,213.12/3,340.80
  6. Step 6: Final answer
    x = 3,873.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.