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Finding the Fourth Proportional to 3,985.71, 5,980.61 and 3,017.76

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Solution

The fourth proportional to 3,985.71, 5,980.61 and 3,017.76 is: 4,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.71 : 5,980.61 = 3,017.76 : x
  2. Step 2: Convert to fraction form
    3,985.71/5,980.61 = 3,017.76/x
  3. Step 3: Cross multiply
    3,985.71x = 5,980.61 × 3,017.76
  4. Step 4: Simplify right side
    3,985.71x = 18,048,045.63
  5. Step 5: Solve for x
    x = 18,048,045.63/3,985.71
  6. Step 6: Final answer
    x = 4,528.19

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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.