Home / 7,788.15-11,678.31-3,403.62

Finding the Fourth Proportional to 7,788.15, 11,678.31 and 3,403.62

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Solution

The fourth proportional to 7,788.15, 11,678.31 and 3,403.62 is: 5,103.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.15 : 11,678.31 = 3,403.62 : x
  2. Step 2: Convert to fraction form
    7,788.15/11,678.31 = 3,403.62/x
  3. Step 3: Cross multiply
    7,788.15x = 11,678.31 × 3,403.62
  4. Step 4: Simplify right side
    7,788.15x = 39,748,529.48
  5. Step 5: Solve for x
    x = 39,748,529.48/7,788.15
  6. Step 6: Final answer
    x = 5,103.72

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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.