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Finding the Fourth Proportional to 3,987.55, 6,009.68 and 3,987.55

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Solution

The fourth proportional to 3,987.55, 6,009.68 and 3,987.55 is: 6,009.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.55 : 6,009.68 = 3,987.55 : x
  2. Step 2: Convert to fraction form
    3,987.55/6,009.68 = 3,987.55/x
  3. Step 3: Cross multiply
    3,987.55x = 6,009.68 × 3,987.55
  4. Step 4: Simplify right side
    3,987.55x = 23,963,899.48
  5. Step 5: Solve for x
    x = 23,963,899.48/3,987.55
  6. Step 6: Final answer
    x = 6,009.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.