Home / 3,869.48-5,340.06-2,190.66

Finding the Fourth Proportional to 3,869.48, 5,340.06 and 2,190.66

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Solution

The fourth proportional to 3,869.48, 5,340.06 and 2,190.66 is: 3,023.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.48 : 5,340.06 = 2,190.66 : x
  2. Step 2: Convert to fraction form
    3,869.48/5,340.06 = 2,190.66/x
  3. Step 3: Cross multiply
    3,869.48x = 5,340.06 × 2,190.66
  4. Step 4: Simplify right side
    3,869.48x = 11,698,275.86
  5. Step 5: Solve for x
    x = 11,698,275.86/3,869.48
  6. Step 6: Final answer
    x = 3,023.22

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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.