Home / 7,020.12-10,521.09-2,855.25

Finding the Fourth Proportional to 7,020.12, 10,521.09 and 2,855.25

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Solution

The fourth proportional to 7,020.12, 10,521.09 and 2,855.25 is: 4,279.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.12 : 10,521.09 = 2,855.25 : x
  2. Step 2: Convert to fraction form
    7,020.12/10,521.09 = 2,855.25/x
  3. Step 3: Cross multiply
    7,020.12x = 10,521.09 × 2,855.25
  4. Step 4: Simplify right side
    7,020.12x = 30,040,342.22
  5. Step 5: Solve for x
    x = 30,040,342.22/7,020.12
  6. Step 6: Final answer
    x = 4,279.18

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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.