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Finding the Fourth Proportional to 4,257.76, 6,381.23 and 1,915.26

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Solution

The fourth proportional to 4,257.76, 6,381.23 and 1,915.26 is: 2,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.76 : 6,381.23 = 1,915.26 : x
  2. Step 2: Convert to fraction form
    4,257.76/6,381.23 = 1,915.26/x
  3. Step 3: Cross multiply
    4,257.76x = 6,381.23 × 1,915.26
  4. Step 4: Simplify right side
    4,257.76x = 12,221,689.04
  5. Step 5: Solve for x
    x = 12,221,689.04/4,257.76
  6. Step 6: Final answer
    x = 2,870.45

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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.