Home / 4,915.72-6,780.84-3,146.68

Finding the Fourth Proportional to 4,915.72, 6,780.84 and 3,146.68

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Solution

The fourth proportional to 4,915.72, 6,780.84 and 3,146.68 is: 4,340.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.72 : 6,780.84 = 3,146.68 : x
  2. Step 2: Convert to fraction form
    4,915.72/6,780.84 = 3,146.68/x
  3. Step 3: Cross multiply
    4,915.72x = 6,780.84 × 3,146.68
  4. Step 4: Simplify right side
    4,915.72x = 21,337,133.61
  5. Step 5: Solve for x
    x = 21,337,133.61/4,915.72
  6. Step 6: Final answer
    x = 4,340.59

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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.