Home / 2,178.45-3,267.72-1,140.53

Finding the Fourth Proportional to 2,178.45, 3,267.72 and 1,140.53

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Solution

The fourth proportional to 2,178.45, 3,267.72 and 1,140.53 is: 1,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.45 : 3,267.72 = 1,140.53 : x
  2. Step 2: Convert to fraction form
    2,178.45/3,267.72 = 1,140.53/x
  3. Step 3: Cross multiply
    2,178.45x = 3,267.72 × 1,140.53
  4. Step 4: Simplify right side
    2,178.45x = 3,726,916.35
  5. Step 5: Solve for x
    x = 3,726,916.35/2,178.45
  6. Step 6: Final answer
    x = 1,710.81

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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.