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Finding the Fourth Proportional to 3,991.77, 5,987.70 and 1,740.06

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Solution

The fourth proportional to 3,991.77, 5,987.70 and 1,740.06 is: 2,610.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.77 : 5,987.70 = 1,740.06 : x
  2. Step 2: Convert to fraction form
    3,991.77/5,987.70 = 1,740.06/x
  3. Step 3: Cross multiply
    3,991.77x = 5,987.70 × 1,740.06
  4. Step 4: Simplify right side
    3,991.77x = 10,418,957.26
  5. Step 5: Solve for x
    x = 10,418,957.26/3,991.77
  6. Step 6: Final answer
    x = 2,610.11

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1.5x scale

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.