Home / 3,491.55-5,243.40-1,851.30

Finding the Fourth Proportional to 3,491.55, 5,243.40 and 1,851.30

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Solution

The fourth proportional to 3,491.55, 5,243.40 and 1,851.30 is: 2,780.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.55 : 5,243.40 = 1,851.30 : x
  2. Step 2: Convert to fraction form
    3,491.55/5,243.40 = 1,851.30/x
  3. Step 3: Cross multiply
    3,491.55x = 5,243.40 × 1,851.30
  4. Step 4: Simplify right side
    3,491.55x = 9,707,106.42
  5. Step 5: Solve for x
    x = 9,707,106.42/3,491.55
  6. Step 6: Final answer
    x = 2,780.17

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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.