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Finding the Fourth Proportional to 3,987.16, 5,975.53 and 2,485.56

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Solution

The fourth proportional to 3,987.16, 5,975.53 and 2,485.56 is: 3,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.16 : 5,975.53 = 2,485.56 : x
  2. Step 2: Convert to fraction form
    3,987.16/5,975.53 = 2,485.56/x
  3. Step 3: Cross multiply
    3,987.16x = 5,975.53 × 2,485.56
  4. Step 4: Simplify right side
    3,987.16x = 14,852,508.47
  5. Step 5: Solve for x
    x = 14,852,508.47/3,987.16
  6. Step 6: Final answer
    x = 3,725.09

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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.