Home / 7,072.04-9,760.30-4,239.40

Finding the Fourth Proportional to 7,072.04, 9,760.30 and 4,239.40

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Solution

The fourth proportional to 7,072.04, 9,760.30 and 4,239.40 is: 5,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.04 : 9,760.30 = 4,239.40 : x
  2. Step 2: Convert to fraction form
    7,072.04/9,760.30 = 4,239.40/x
  3. Step 3: Cross multiply
    7,072.04x = 9,760.30 × 4,239.40
  4. Step 4: Simplify right side
    7,072.04x = 41,377,815.82
  5. Step 5: Solve for x
    x = 41,377,815.82/7,072.04
  6. Step 6: Final answer
    x = 5,850.90

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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.