Home / 7,778.94-11,642.85-5,920.02

Finding the Fourth Proportional to 7,778.94, 11,642.85 and 5,920.02

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Solution

The fourth proportional to 7,778.94, 11,642.85 and 5,920.02 is: 8,860.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.94 : 11,642.85 = 5,920.02 : x
  2. Step 2: Convert to fraction form
    7,778.94/11,642.85 = 5,920.02/x
  3. Step 3: Cross multiply
    7,778.94x = 11,642.85 × 5,920.02
  4. Step 4: Simplify right side
    7,778.94x = 68,925,904.86
  5. Step 5: Solve for x
    x = 68,925,904.86/7,778.94
  6. Step 6: Final answer
    x = 8,860.58

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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.