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Finding the Fourth Proportional to 3,995.84, 5,987.68 and 1,686.08

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Solution

The fourth proportional to 3,995.84, 5,987.68 and 1,686.08 is: 2,526.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.84 : 5,987.68 = 1,686.08 : x
  2. Step 2: Convert to fraction form
    3,995.84/5,987.68 = 1,686.08/x
  3. Step 3: Cross multiply
    3,995.84x = 5,987.68 × 1,686.08
  4. Step 4: Simplify right side
    3,995.84x = 10,095,707.49
  5. Step 5: Solve for x
    x = 10,095,707.49/3,995.84
  6. Step 6: Final answer
    x = 2,526.55

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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.