Home / 7,123.45-10,687.87-2,963.11

Finding the Fourth Proportional to 7,123.45, 10,687.87 and 2,963.11

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Solution

The fourth proportional to 7,123.45, 10,687.87 and 2,963.11 is: 4,445.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.45 : 10,687.87 = 2,963.11 : x
  2. Step 2: Convert to fraction form
    7,123.45/10,687.87 = 2,963.11/x
  3. Step 3: Cross multiply
    7,123.45x = 10,687.87 × 2,963.11
  4. Step 4: Simplify right side
    7,123.45x = 31,669,334.22
  5. Step 5: Solve for x
    x = 31,669,334.22/7,123.45
  6. Step 6: Final answer
    x = 4,445.79

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1.5x scale

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.