Home / 7,139.43-10,696.23-3,436.38

Finding the Fourth Proportional to 7,139.43, 10,696.23 and 3,436.38

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Solution

The fourth proportional to 7,139.43, 10,696.23 and 3,436.38 is: 5,148.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.43 : 10,696.23 = 3,436.38 : x
  2. Step 2: Convert to fraction form
    7,139.43/10,696.23 = 3,436.38/x
  3. Step 3: Cross multiply
    7,139.43x = 10,696.23 × 3,436.38
  4. Step 4: Simplify right side
    7,139.43x = 36,756,310.85
  5. Step 5: Solve for x
    x = 36,756,310.85/7,139.43
  6. Step 6: Final answer
    x = 5,148.35

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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.