Home / 2,772.96-3,818.52-2,478.12

Finding the Fourth Proportional to 2,772.96, 3,818.52 and 2,478.12

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Solution

The fourth proportional to 2,772.96, 3,818.52 and 2,478.12 is: 3,412.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.96 : 3,818.52 = 2,478.12 : x
  2. Step 2: Convert to fraction form
    2,772.96/3,818.52 = 2,478.12/x
  3. Step 3: Cross multiply
    2,772.96x = 3,818.52 × 2,478.12
  4. Step 4: Simplify right side
    2,772.96x = 9,462,750.78
  5. Step 5: Solve for x
    x = 9,462,750.78/2,772.96
  6. Step 6: Final answer
    x = 3,412.51

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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.