Home / 7,217.89-9,955.43-5,520.23

Finding the Fourth Proportional to 7,217.89, 9,955.43 and 5,520.23

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Solution

The fourth proportional to 7,217.89, 9,955.43 and 5,520.23 is: 7,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,217.89 : 9,955.43 = 5,520.23 : x
  2. Step 2: Convert to fraction form
    7,217.89/9,955.43 = 5,520.23/x
  3. Step 3: Cross multiply
    7,217.89x = 9,955.43 × 5,520.23
  4. Step 4: Simplify right side
    7,217.89x = 54,956,263.35
  5. Step 5: Solve for x
    x = 54,956,263.35/7,217.89
  6. Step 6: Final answer
    x = 7,613.90

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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.