Home / 7,788.42-11,686.06-4,089.79

Finding the Fourth Proportional to 7,788.42, 11,686.06 and 4,089.79

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Solution

The fourth proportional to 7,788.42, 11,686.06 and 4,089.79 is: 6,136.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.42 : 11,686.06 = 4,089.79 : x
  2. Step 2: Convert to fraction form
    7,788.42/11,686.06 = 4,089.79/x
  3. Step 3: Cross multiply
    7,788.42x = 11,686.06 × 4,089.79
  4. Step 4: Simplify right side
    7,788.42x = 47,793,531.33
  5. Step 5: Solve for x
    x = 47,793,531.33/7,788.42
  6. Step 6: Final answer
    x = 6,136.49

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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.