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Finding the Fourth Proportional to 5,322.90, 7,988.13 and 1,860.18

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Solution

The fourth proportional to 5,322.90, 7,988.13 and 1,860.18 is: 2,791.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322.90 : 7,988.13 = 1,860.18 : x
  2. Step 2: Convert to fraction form
    5,322.90/7,988.13 = 1,860.18/x
  3. Step 3: Cross multiply
    5,322.90x = 7,988.13 × 1,860.18
  4. Step 4: Simplify right side
    5,322.90x = 14,859,359.66
  5. Step 5: Solve for x
    x = 14,859,359.66/5,322.90
  6. Step 6: Final answer
    x = 2,791.59

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.