Home / 2,186.53-3,281.06-1,309.30

Finding the Fourth Proportional to 2,186.53, 3,281.06 and 1,309.30

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Solution

The fourth proportional to 2,186.53, 3,281.06 and 1,309.30 is: 1,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.53 : 3,281.06 = 1,309.30 : x
  2. Step 2: Convert to fraction form
    2,186.53/3,281.06 = 1,309.30/x
  3. Step 3: Cross multiply
    2,186.53x = 3,281.06 × 1,309.30
  4. Step 4: Simplify right side
    2,186.53x = 4,295,885.31
  5. Step 5: Solve for x
    x = 4,295,885.31/2,186.53
  6. Step 6: Final answer
    x = 1,964.70

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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.