Home / 7,718.32-11,576.40-2,787.28

Finding the Fourth Proportional to 7,718.32, 11,576.40 and 2,787.28

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Solution

The fourth proportional to 7,718.32, 11,576.40 and 2,787.28 is: 4,180.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.32 : 11,576.40 = 2,787.28 : x
  2. Step 2: Convert to fraction form
    7,718.32/11,576.40 = 2,787.28/x
  3. Step 3: Cross multiply
    7,718.32x = 11,576.40 × 2,787.28
  4. Step 4: Simplify right side
    7,718.32x = 32,266,668.19
  5. Step 5: Solve for x
    x = 32,266,668.19/7,718.32
  6. Step 6: Final answer
    x = 4,180.53

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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.