Home / 8,416.20-11,621.70-5,277.80

Finding the Fourth Proportional to 8,416.20, 11,621.70 and 5,277.80

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Solution

The fourth proportional to 8,416.20, 11,621.70 and 5,277.80 is: 7,287.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.20 : 11,621.70 = 5,277.80 : x
  2. Step 2: Convert to fraction form
    8,416.20/11,621.70 = 5,277.80/x
  3. Step 3: Cross multiply
    8,416.20x = 11,621.70 × 5,277.80
  4. Step 4: Simplify right side
    8,416.20x = 61,337,008.26
  5. Step 5: Solve for x
    x = 61,337,008.26/8,416.20
  6. Step 6: Final answer
    x = 7,287.97

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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.