Home / 2,772.40-4,138.60-2,569.72

Finding the Fourth Proportional to 2,772.40, 4,138.60 and 2,569.72

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Solution

The fourth proportional to 2,772.40, 4,138.60 and 2,569.72 is: 3,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.40 : 4,138.60 = 2,569.72 : x
  2. Step 2: Convert to fraction form
    2,772.40/4,138.60 = 2,569.72/x
  3. Step 3: Cross multiply
    2,772.40x = 4,138.60 × 2,569.72
  4. Step 4: Simplify right side
    2,772.40x = 10,635,043.19
  5. Step 5: Solve for x
    x = 10,635,043.19/2,772.40
  6. Step 6: Final answer
    x = 3,836.04

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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.