Home / 7,012.78-10,519.20-1,818.70

Finding the Fourth Proportional to 7,012.78, 10,519.20 and 1,818.70

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Solution

The fourth proportional to 7,012.78, 10,519.20 and 1,818.70 is: 2,728.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.78 : 10,519.20 = 1,818.70 : x
  2. Step 2: Convert to fraction form
    7,012.78/10,519.20 = 1,818.70/x
  3. Step 3: Cross multiply
    7,012.78x = 10,519.20 × 1,818.70
  4. Step 4: Simplify right side
    7,012.78x = 19,131,269.04
  5. Step 5: Solve for x
    x = 19,131,269.04/7,012.78
  6. Step 6: Final answer
    x = 2,728.06

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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.