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Finding the Fourth Proportional to 5,335.72, 7,987.76 and 3,955.24

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Solution

The fourth proportional to 5,335.72, 7,987.76 and 3,955.24 is: 5,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,335.72 : 7,987.76 = 3,955.24 : x
  2. Step 2: Convert to fraction form
    5,335.72/7,987.76 = 3,955.24/x
  3. Step 3: Cross multiply
    5,335.72x = 7,987.76 × 3,955.24
  4. Step 4: Simplify right side
    5,335.72x = 31,593,448.15
  5. Step 5: Solve for x
    x = 31,593,448.15/5,335.72
  6. Step 6: Final answer
    x = 5,921.13

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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.