Home / 7,069.15-10,605.39-2,138.83

Finding the Fourth Proportional to 7,069.15, 10,605.39 and 2,138.83

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Solution

The fourth proportional to 7,069.15, 10,605.39 and 2,138.83 is: 3,208.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,069.15 : 10,605.39 = 2,138.83 : x
  2. Step 2: Convert to fraction form
    7,069.15/10,605.39 = 2,138.83/x
  3. Step 3: Cross multiply
    7,069.15x = 10,605.39 × 2,138.83
  4. Step 4: Simplify right side
    7,069.15x = 22,683,126.29
  5. Step 5: Solve for x
    x = 22,683,126.29/7,069.15
  6. Step 6: Final answer
    x = 3,208.75

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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.