Home / 7,742.61-10,684.75-4,205.79

Finding the Fourth Proportional to 7,742.61, 10,684.75 and 4,205.79

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Solution

The fourth proportional to 7,742.61, 10,684.75 and 4,205.79 is: 5,803.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.61 : 10,684.75 = 4,205.79 : x
  2. Step 2: Convert to fraction form
    7,742.61/10,684.75 = 4,205.79/x
  3. Step 3: Cross multiply
    7,742.61x = 10,684.75 × 4,205.79
  4. Step 4: Simplify right side
    7,742.61x = 44,937,814.70
  5. Step 5: Solve for x
    x = 44,937,814.70/7,742.61
  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.