Home / 3,281.18-4,921.40-1,172.35

Finding the Fourth Proportional to 3,281.18, 4,921.40 and 1,172.35

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Solution

The fourth proportional to 3,281.18, 4,921.40 and 1,172.35 is: 1,758.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.18 : 4,921.40 = 1,172.35 : x
  2. Step 2: Convert to fraction form
    3,281.18/4,921.40 = 1,172.35/x
  3. Step 3: Cross multiply
    3,281.18x = 4,921.40 × 1,172.35
  4. Step 4: Simplify right side
    3,281.18x = 5,769,604.46
  5. Step 5: Solve for x
    x = 5,769,604.46/3,281.18
  6. Step 6: Final answer
    x = 1,758.39

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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.