Home / 7,855.12-11,782.78-2,590.67

Finding the Fourth Proportional to 7,855.12, 11,782.78 and 2,590.67

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Solution

The fourth proportional to 7,855.12, 11,782.78 and 2,590.67 is: 3,886.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.12 : 11,782.78 = 2,590.67 : x
  2. Step 2: Convert to fraction form
    7,855.12/11,782.78 = 2,590.67/x
  3. Step 3: Cross multiply
    7,855.12x = 11,782.78 × 2,590.67
  4. Step 4: Simplify right side
    7,855.12x = 30,525,294.66
  5. Step 5: Solve for x
    x = 30,525,294.66/7,855.12
  6. Step 6: Final answer
    x = 3,886.04

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Similar ratio
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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.