Home / 7,718.60-11,575.47-2,787.59

Finding the Fourth Proportional to 7,718.60, 11,575.47 and 2,787.59

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Solution

The fourth proportional to 7,718.60, 11,575.47 and 2,787.59 is: 4,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.60 : 11,575.47 = 2,787.59 : x
  2. Step 2: Convert to fraction form
    7,718.60/11,575.47 = 2,787.59/x
  3. Step 3: Cross multiply
    7,718.60x = 11,575.47 × 2,787.59
  4. Step 4: Simplify right side
    7,718.60x = 32,267,664.42
  5. Step 5: Solve for x
    x = 32,267,664.42/7,718.60
  6. Step 6: Final answer
    x = 4,180.51

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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.