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Finding the Fourth Proportional to 3,407.98, 4,703.06 and 1,915.83

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Solution

The fourth proportional to 3,407.98, 4,703.06 and 1,915.83 is: 2,643.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.98 : 4,703.06 = 1,915.83 : x
  2. Step 2: Convert to fraction form
    3,407.98/4,703.06 = 1,915.83/x
  3. Step 3: Cross multiply
    3,407.98x = 4,703.06 × 1,915.83
  4. Step 4: Simplify right side
    3,407.98x = 9,010,263.44
  5. Step 5: Solve for x
    x = 9,010,263.44/3,407.98
  6. Step 6: Final answer
    x = 2,643.87

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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.