Home / 7,742.60-10,684.80-4,205.76

Finding the Fourth Proportional to 7,742.60, 10,684.80 and 4,205.76

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Solution

The fourth proportional to 7,742.60, 10,684.80 and 4,205.76 is: 5,803.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.60 : 10,684.80 = 4,205.76 : x
  2. Step 2: Convert to fraction form
    7,742.60/10,684.80 = 4,205.76/x
  3. Step 3: Cross multiply
    7,742.60x = 10,684.80 × 4,205.76
  4. Step 4: Simplify right side
    7,742.60x = 44,937,704.45
  5. Step 5: Solve for x
    x = 44,937,704.45/7,742.60
  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.