Home / 7,742.56-10,684.72-4,205.78

Finding the Fourth Proportional to 7,742.56, 10,684.72 and 4,205.78

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Solution

The fourth proportional to 7,742.56, 10,684.72 and 4,205.78 is: 5,803.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.56 : 10,684.72 = 4,205.78 : x
  2. Step 2: Convert to fraction form
    7,742.56/10,684.72 = 4,205.78/x
  3. Step 3: Cross multiply
    7,742.56x = 10,684.72 × 4,205.78
  4. Step 4: Simplify right side
    7,742.56x = 44,937,517.74
  5. Step 5: Solve for x
    x = 44,937,517.74/7,742.56
  6. Step 6: Final answer
    x = 5,803.96

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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.