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Finding the Fourth Proportional to 3,779.96, 5,644.45 and 3,087.98

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Solution

The fourth proportional to 3,779.96, 5,644.45 and 3,087.98 is: 4,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.96 : 5,644.45 = 3,087.98 : x
  2. Step 2: Convert to fraction form
    3,779.96/5,644.45 = 3,087.98/x
  3. Step 3: Cross multiply
    3,779.96x = 5,644.45 × 3,087.98
  4. Step 4: Simplify right side
    3,779.96x = 17,429,948.71
  5. Step 5: Solve for x
    x = 17,429,948.71/3,779.96
  6. Step 6: Final answer
    x = 4,611.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.