Home / 7,110.72-9,791.28-5,613.84

Finding the Fourth Proportional to 7,110.72, 9,791.28 and 5,613.84

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Solution

The fourth proportional to 7,110.72, 9,791.28 and 5,613.84 is: 7,730.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.72 : 9,791.28 = 5,613.84 : x
  2. Step 2: Convert to fraction form
    7,110.72/9,791.28 = 5,613.84/x
  3. Step 3: Cross multiply
    7,110.72x = 9,791.28 × 5,613.84
  4. Step 4: Simplify right side
    7,110.72x = 54,966,679.32
  5. Step 5: Solve for x
    x = 54,966,679.32/7,110.72
  6. Step 6: Final answer
    x = 7,730.11

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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.