Home / 3,543.69-4,890.16-1,971.75

Finding the Fourth Proportional to 3,543.69, 4,890.16 and 1,971.75

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Solution

The fourth proportional to 3,543.69, 4,890.16 and 1,971.75 is: 2,720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.69 : 4,890.16 = 1,971.75 : x
  2. Step 2: Convert to fraction form
    3,543.69/4,890.16 = 1,971.75/x
  3. Step 3: Cross multiply
    3,543.69x = 4,890.16 × 1,971.75
  4. Step 4: Simplify right side
    3,543.69x = 9,642,172.98
  5. Step 5: Solve for x
    x = 9,642,172.98/3,543.69
  6. Step 6: Final answer
    x = 2,720.94

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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.