Home / 7,072.90-10,613.33-6,515.21

Finding the Fourth Proportional to 7,072.90, 10,613.33 and 6,515.21

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Solution

The fourth proportional to 7,072.90, 10,613.33 and 6,515.21 is: 9,776.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.90 : 10,613.33 = 6,515.21 : x
  2. Step 2: Convert to fraction form
    7,072.90/10,613.33 = 6,515.21/x
  3. Step 3: Cross multiply
    7,072.90x = 10,613.33 × 6,515.21
  4. Step 4: Simplify right side
    7,072.90x = 69,148,073.75
  5. Step 5: Solve for x
    x = 69,148,073.75/7,072.90
  6. Step 6: Final answer
    x = 9,776.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.