Home / 7,948.68-11,915.28-3,787.58

Finding the Fourth Proportional to 7,948.68, 11,915.28 and 3,787.58

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Solution

The fourth proportional to 7,948.68, 11,915.28 and 3,787.58 is: 5,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948.68 : 11,915.28 = 3,787.58 : x
  2. Step 2: Convert to fraction form
    7,948.68/11,915.28 = 3,787.58/x
  3. Step 3: Cross multiply
    7,948.68x = 11,915.28 × 3,787.58
  4. Step 4: Simplify right side
    7,948.68x = 45,130,016.65
  5. Step 5: Solve for x
    x = 45,130,016.65/7,948.68
  6. Step 6: Final answer
    x = 5,677.67

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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.