Home / 7,780.62-10,737.39-4,243.86

Finding the Fourth Proportional to 7,780.62, 10,737.39 and 4,243.86

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Solution

The fourth proportional to 7,780.62, 10,737.39 and 4,243.86 is: 5,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.62 : 10,737.39 = 4,243.86 : x
  2. Step 2: Convert to fraction form
    7,780.62/10,737.39 = 4,243.86/x
  3. Step 3: Cross multiply
    7,780.62x = 10,737.39 × 4,243.86
  4. Step 4: Simplify right side
    7,780.62x = 45,567,979.93
  5. Step 5: Solve for x
    x = 45,567,979.93/7,780.62
  6. Step 6: Final answer
    x = 5,856.60

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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.