Home / 7,740.10-11,600.39-4,222.78

Finding the Fourth Proportional to 7,740.10, 11,600.39 and 4,222.78

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Solution

The fourth proportional to 7,740.10, 11,600.39 and 4,222.78 is: 6,328.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.10 : 11,600.39 = 4,222.78 : x
  2. Step 2: Convert to fraction form
    7,740.10/11,600.39 = 4,222.78/x
  3. Step 3: Cross multiply
    7,740.10x = 11,600.39 × 4,222.78
  4. Step 4: Simplify right side
    7,740.10x = 48,985,873.77
  5. Step 5: Solve for x
    x = 48,985,873.77/7,740.10
  6. Step 6: Final answer
    x = 6,328.84

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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.