Home / 2,787.01-3,849.32-2,165.13

Finding the Fourth Proportional to 2,787.01, 3,849.32 and 2,165.13

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Solution

The fourth proportional to 2,787.01, 3,849.32 and 2,165.13 is: 2,990.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.01 : 3,849.32 = 2,165.13 : x
  2. Step 2: Convert to fraction form
    2,787.01/3,849.32 = 2,165.13/x
  3. Step 3: Cross multiply
    2,787.01x = 3,849.32 × 2,165.13
  4. Step 4: Simplify right side
    2,787.01x = 8,334,283.62
  5. Step 5: Solve for x
    x = 8,334,283.62/2,787.01
  6. Step 6: Final answer
    x = 2,990.41

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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.