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Finding the Fourth Proportional to 3,408.03, 4,703.06 and 1,915.88

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Solution

The fourth proportional to 3,408.03, 4,703.06 and 1,915.88 is: 2,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.03 : 4,703.06 = 1,915.88 : x
  2. Step 2: Convert to fraction form
    3,408.03/4,703.06 = 1,915.88/x
  3. Step 3: Cross multiply
    3,408.03x = 4,703.06 × 1,915.88
  4. Step 4: Simplify right side
    3,408.03x = 9,010,479.87
  5. Step 5: Solve for x
    x = 9,010,479.87/3,408.03
  6. Step 6: Final answer
    x = 2,643.90

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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.