Home / 3,214.19-4,430.28-2,151.57

Finding the Fourth Proportional to 3,214.19, 4,430.28 and 2,151.57

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Solution

The fourth proportional to 3,214.19, 4,430.28 and 2,151.57 is: 2,965.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.19 : 4,430.28 = 2,151.57 : x
  2. Step 2: Convert to fraction form
    3,214.19/4,430.28 = 2,151.57/x
  3. Step 3: Cross multiply
    3,214.19x = 4,430.28 × 2,151.57
  4. Step 4: Simplify right side
    3,214.19x = 9,532,057.54
  5. Step 5: Solve for x
    x = 9,532,057.54/3,214.19
  6. Step 6: Final answer
    x = 2,965.62

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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.