Home / 2,891.16-4,331.52-2,431.80

Finding the Fourth Proportional to 2,891.16, 4,331.52 and 2,431.80

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Solution

The fourth proportional to 2,891.16, 4,331.52 and 2,431.80 is: 3,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.16 : 4,331.52 = 2,431.80 : x
  2. Step 2: Convert to fraction form
    2,891.16/4,331.52 = 2,431.80/x
  3. Step 3: Cross multiply
    2,891.16x = 4,331.52 × 2,431.80
  4. Step 4: Simplify right side
    2,891.16x = 10,533,390.34
  5. Step 5: Solve for x
    x = 10,533,390.34/2,891.16
  6. Step 6: Final answer
    x = 3,643.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.