Home / 3,538.20-4,881.86-2,122.32

Finding the Fourth Proportional to 3,538.20, 4,881.86 and 2,122.32

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Solution

The fourth proportional to 3,538.20, 4,881.86 and 2,122.32 is: 2,928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.20 : 4,881.86 = 2,122.32 : x
  2. Step 2: Convert to fraction form
    3,538.20/4,881.86 = 2,122.32/x
  3. Step 3: Cross multiply
    3,538.20x = 4,881.86 × 2,122.32
  4. Step 4: Simplify right side
    3,538.20x = 10,360,869.12
  5. Step 5: Solve for x
    x = 10,360,869.12/3,538.20
  6. Step 6: Final answer
    x = 2,928.29

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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.