Home / 3,543.64-4,890.56-1,971.72

Finding the Fourth Proportional to 3,543.64, 4,890.56 and 1,971.72

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Solution

The fourth proportional to 3,543.64, 4,890.56 and 1,971.72 is: 2,721.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.64 : 4,890.56 = 1,971.72 : x
  2. Step 2: Convert to fraction form
    3,543.64/4,890.56 = 1,971.72/x
  3. Step 3: Cross multiply
    3,543.64x = 4,890.56 × 1,971.72
  4. Step 4: Simplify right side
    3,543.64x = 9,642,814.96
  5. Step 5: Solve for x
    x = 9,642,814.96/3,543.64
  6. Step 6: Final answer
    x = 2,721.16

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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.