Home / 3,787.40-5,221.74-2,775.92

Finding the Fourth Proportional to 3,787.40, 5,221.74 and 2,775.92

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Solution

The fourth proportional to 3,787.40, 5,221.74 and 2,775.92 is: 3,827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.40 : 5,221.74 = 2,775.92 : x
  2. Step 2: Convert to fraction form
    3,787.40/5,221.74 = 2,775.92/x
  3. Step 3: Cross multiply
    3,787.40x = 5,221.74 × 2,775.92
  4. Step 4: Simplify right side
    3,787.40x = 14,495,132.50
  5. Step 5: Solve for x
    x = 14,495,132.50/3,787.40
  6. Step 6: Final answer
    x = 3,827.20

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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.