Home / 2,190.29-3,281.11-1,643.09

Finding the Fourth Proportional to 2,190.29, 3,281.11 and 1,643.09

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Solution

The fourth proportional to 2,190.29, 3,281.11 and 1,643.09 is: 2,461.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.29 : 3,281.11 = 1,643.09 : x
  2. Step 2: Convert to fraction form
    2,190.29/3,281.11 = 1,643.09/x
  3. Step 3: Cross multiply
    2,190.29x = 3,281.11 × 1,643.09
  4. Step 4: Simplify right side
    2,190.29x = 5,391,159.03
  5. Step 5: Solve for x
    x = 5,391,159.03/2,190.29
  6. Step 6: Final answer
    x = 2,461.39

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1.5x scale

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.