Home / 7,520.85-10,378.71-4,208.85

Finding the Fourth Proportional to 7,520.85, 10,378.71 and 4,208.85

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Solution

The fourth proportional to 7,520.85, 10,378.71 and 4,208.85 is: 5,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.85 : 10,378.71 = 4,208.85 : x
  2. Step 2: Convert to fraction form
    7,520.85/10,378.71 = 4,208.85/x
  3. Step 3: Cross multiply
    7,520.85x = 10,378.71 × 4,208.85
  4. Step 4: Simplify right side
    7,520.85x = 43,682,433.58
  5. Step 5: Solve for x
    x = 43,682,433.58/7,520.85
  6. Step 6: Final answer
    x = 5,808.18

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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.