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Finding the Fourth Proportional to 9,603.69, 13,255.22 and 6,240.66

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Solution

The fourth proportional to 9,603.69, 13,255.22 and 6,240.66 is: 8,613.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,603.69 : 13,255.22 = 6,240.66 : x
  2. Step 2: Convert to fraction form
    9,603.69/13,255.22 = 6,240.66/x
  3. Step 3: Cross multiply
    9,603.69x = 13,255.22 × 6,240.66
  4. Step 4: Simplify right side
    9,603.69x = 82,721,317.82
  5. Step 5: Solve for x
    x = 82,721,317.82/9,603.69
  6. Step 6: Final answer
    x = 8,613.49

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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.