Home / 7,712.18-11,557.20-4,788.80

Finding the Fourth Proportional to 7,712.18, 11,557.20 and 4,788.80

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Solution

The fourth proportional to 7,712.18, 11,557.20 and 4,788.80 is: 7,176.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.18 : 11,557.20 = 4,788.80 : x
  2. Step 2: Convert to fraction form
    7,712.18/11,557.20 = 4,788.80/x
  3. Step 3: Cross multiply
    7,712.18x = 11,557.20 × 4,788.80
  4. Step 4: Simplify right side
    7,712.18x = 55,345,119.36
  5. Step 5: Solve for x
    x = 55,345,119.36/7,712.18
  6. Step 6: Final answer
    x = 7,176.33

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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.