Home / 2,190.04-3,281.70-1,310.80

Finding the Fourth Proportional to 2,190.04, 3,281.70 and 1,310.80

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Solution

The fourth proportional to 2,190.04, 3,281.70 and 1,310.80 is: 1,964.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.04 : 3,281.70 = 1,310.80 : x
  2. Step 2: Convert to fraction form
    2,190.04/3,281.70 = 1,310.80/x
  3. Step 3: Cross multiply
    2,190.04x = 3,281.70 × 1,310.80
  4. Step 4: Simplify right side
    2,190.04x = 4,301,652.36
  5. Step 5: Solve for x
    x = 4,301,652.36/2,190.04
  6. Step 6: Final answer
    x = 1,964.19

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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.