Home / 3,543.39-4,889.90-1,971.48

Finding the Fourth Proportional to 3,543.39, 4,889.90 and 1,971.48

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Solution

The fourth proportional to 3,543.39, 4,889.90 and 1,971.48 is: 2,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.39 : 4,889.90 = 1,971.48 : x
  2. Step 2: Convert to fraction form
    3,543.39/4,889.90 = 1,971.48/x
  3. Step 3: Cross multiply
    3,543.39x = 4,889.90 × 1,971.48
  4. Step 4: Simplify right side
    3,543.39x = 9,640,330.19
  5. Step 5: Solve for x
    x = 9,640,330.19/3,543.39
  6. Step 6: Final answer
    x = 2,720.65

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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.