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Finding the Fourth Proportional to 2,854.40, 4,274.40 and 2,724.80

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Solution

The fourth proportional to 2,854.40, 4,274.40 and 2,724.80 is: 4,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.40 : 4,274.40 = 2,724.80 : x
  2. Step 2: Convert to fraction form
    2,854.40/4,274.40 = 2,724.80/x
  3. Step 3: Cross multiply
    2,854.40x = 4,274.40 × 2,724.80
  4. Step 4: Simplify right side
    2,854.40x = 11,646,885.12
  5. Step 5: Solve for x
    x = 11,646,885.12/2,854.40
  6. Step 6: Final answer
    x = 4,080.33

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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.