Home / 3,543.12-4,889.70-1,971.18

Finding the Fourth Proportional to 3,543.12, 4,889.70 and 1,971.18

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Solution

The fourth proportional to 3,543.12, 4,889.70 and 1,971.18 is: 2,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.12 : 4,889.70 = 1,971.18 : x
  2. Step 2: Convert to fraction form
    3,543.12/4,889.70 = 1,971.18/x
  3. Step 3: Cross multiply
    3,543.12x = 4,889.70 × 1,971.18
  4. Step 4: Simplify right side
    3,543.12x = 9,638,478.85
  5. Step 5: Solve for x
    x = 9,638,478.85/3,543.12
  6. Step 6: Final answer
    x = 2,720.34

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Double scale
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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.