Home / 3,122.20-4,309.62-1,864.18

Finding the Fourth Proportional to 3,122.20, 4,309.62 and 1,864.18

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Solution

The fourth proportional to 3,122.20, 4,309.62 and 1,864.18 is: 2,573.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.20 : 4,309.62 = 1,864.18 : x
  2. Step 2: Convert to fraction form
    3,122.20/4,309.62 = 1,864.18/x
  3. Step 3: Cross multiply
    3,122.20x = 4,309.62 × 1,864.18
  4. Step 4: Simplify right side
    3,122.20x = 8,033,907.41
  5. Step 5: Solve for x
    x = 8,033,907.41/3,122.20
  6. Step 6: Final answer
    x = 2,573.16

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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.