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Finding the Fourth Proportional to 3,543.32, 4,889.88 and 1,971.52

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Solution

The fourth proportional to 3,543.32, 4,889.88 and 1,971.52 is: 2,720.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.32 : 4,889.88 = 1,971.52 : x
  2. Step 2: Convert to fraction form
    3,543.32/4,889.88 = 1,971.52/x
  3. Step 3: Cross multiply
    3,543.32x = 4,889.88 × 1,971.52
  4. Step 4: Simplify right side
    3,543.32x = 9,640,496.22
  5. Step 5: Solve for x
    x = 9,640,496.22/3,543.32
  6. Step 6: Final answer
    x = 2,720.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.