Home / 7,020.78-10,528.33-3,509.43

Finding the Fourth Proportional to 7,020.78, 10,528.33 and 3,509.43

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Solution

The fourth proportional to 7,020.78, 10,528.33 and 3,509.43 is: 5,262.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.78 : 10,528.33 = 3,509.43 : x
  2. Step 2: Convert to fraction form
    7,020.78/10,528.33 = 3,509.43/x
  3. Step 3: Cross multiply
    7,020.78x = 10,528.33 × 3,509.43
  4. Step 4: Simplify right side
    7,020.78x = 36,948,395.48
  5. Step 5: Solve for x
    x = 36,948,395.48/7,020.78
  6. Step 6: Final answer
    x = 5,262.72

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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.