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Finding the Fourth Proportional to 10,658.70, 15,987.93 and 4,811.22

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Solution

The fourth proportional to 10,658.70, 15,987.93 and 4,811.22 is: 7,216.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,658.70 : 15,987.93 = 4,811.22 : x
  2. Step 2: Convert to fraction form
    10,658.70/15,987.93 = 4,811.22/x
  3. Step 3: Cross multiply
    10,658.70x = 15,987.93 × 4,811.22
  4. Step 4: Simplify right side
    10,658.70x = 76,921,448.57
  5. Step 5: Solve for x
    x = 76,921,448.57/10,658.70
  6. Step 6: Final answer
    x = 7,216.78

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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.