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Finding the Fourth Proportional to 3,990.06, 5,985.50 and 1,526.95

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Solution

The fourth proportional to 3,990.06, 5,985.50 and 1,526.95 is: 2,290.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.06 : 5,985.50 = 1,526.95 : x
  2. Step 2: Convert to fraction form
    3,990.06/5,985.50 = 1,526.95/x
  3. Step 3: Cross multiply
    3,990.06x = 5,985.50 × 1,526.95
  4. Step 4: Simplify right side
    3,990.06x = 9,139,536.63
  5. Step 5: Solve for x
    x = 9,139,536.63/3,990.06
  6. Step 6: Final answer
    x = 2,290.58

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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.