Home / 3,278.73-4,892.90-2,928.40

Finding the Fourth Proportional to 3,278.73, 4,892.90 and 2,928.40

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Solution

The fourth proportional to 3,278.73, 4,892.90 and 2,928.40 is: 4,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.73 : 4,892.90 = 2,928.40 : x
  2. Step 2: Convert to fraction form
    3,278.73/4,892.90 = 2,928.40/x
  3. Step 3: Cross multiply
    3,278.73x = 4,892.90 × 2,928.40
  4. Step 4: Simplify right side
    3,278.73x = 14,328,368.36
  5. Step 5: Solve for x
    x = 14,328,368.36/3,278.73
  6. Step 6: Final answer
    x = 4,370.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.