Home / 4,915.22-7,374.98-1,628.78

Finding the Fourth Proportional to 4,915.22, 7,374.98 and 1,628.78

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Solution

The fourth proportional to 4,915.22, 7,374.98 and 1,628.78 is: 2,443.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.22 : 7,374.98 = 1,628.78 : x
  2. Step 2: Convert to fraction form
    4,915.22/7,374.98 = 1,628.78/x
  3. Step 3: Cross multiply
    4,915.22x = 7,374.98 × 1,628.78
  4. Step 4: Simplify right side
    4,915.22x = 12,012,187.12
  5. Step 5: Solve for x
    x = 12,012,187.12/4,915.22
  6. Step 6: Final answer
    x = 2,443.88

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1.5x scale

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.