Home / 5,123.44-7,069.80-2,885.62

Finding the Fourth Proportional to 5,123.44, 7,069.80 and 2,885.62

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Solution

The fourth proportional to 5,123.44, 7,069.80 and 2,885.62 is: 3,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.44 : 7,069.80 = 2,885.62 : x
  2. Step 2: Convert to fraction form
    5,123.44/7,069.80 = 2,885.62/x
  3. Step 3: Cross multiply
    5,123.44x = 7,069.80 × 2,885.62
  4. Step 4: Simplify right side
    5,123.44x = 20,400,756.28
  5. Step 5: Solve for x
    x = 20,400,756.28/5,123.44
  6. Step 6: Final answer
    x = 3,981.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.