Home / 2,787.34-4,181.06-913.22

Finding the Fourth Proportional to 2,787.34, 4,181.06 and 913.22

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Solution

The fourth proportional to 2,787.34, 4,181.06 and 913.22 is: 1,369.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.34 : 4,181.06 = 913.22 : x
  2. Step 2: Convert to fraction form
    2,787.34/4,181.06 = 913.22/x
  3. Step 3: Cross multiply
    2,787.34x = 4,181.06 × 913.22
  4. Step 4: Simplify right side
    2,787.34x = 3,818,227.61
  5. Step 5: Solve for x
    x = 3,818,227.61/2,787.34
  6. Step 6: Final answer
    x = 1,369.85

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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.