Home / 7,915.32-11,868.96-2,648.46

Finding the Fourth Proportional to 7,915.32, 11,868.96 and 2,648.46

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Solution

The fourth proportional to 7,915.32, 11,868.96 and 2,648.46 is: 3,971.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.32 : 11,868.96 = 2,648.46 : x
  2. Step 2: Convert to fraction form
    7,915.32/11,868.96 = 2,648.46/x
  3. Step 3: Cross multiply
    7,915.32x = 11,868.96 × 2,648.46
  4. Step 4: Simplify right side
    7,915.32x = 31,434,465.80
  5. Step 5: Solve for x
    x = 31,434,465.80/7,915.32
  6. Step 6: Final answer
    x = 3,971.34

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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.