Home / 7,899.15-11,830.91-5,809.35

Finding the Fourth Proportional to 7,899.15, 11,830.91 and 5,809.35

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Solution

The fourth proportional to 7,899.15, 11,830.91 and 5,809.35 is: 8,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.15 : 11,830.91 = 5,809.35 : x
  2. Step 2: Convert to fraction form
    7,899.15/11,830.91 = 5,809.35/x
  3. Step 3: Cross multiply
    7,899.15x = 11,830.91 × 5,809.35
  4. Step 4: Simplify right side
    7,899.15x = 68,729,867.96
  5. Step 5: Solve for x
    x = 68,729,867.96/7,899.15
  6. Step 6: Final answer
    x = 8,700.92

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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.