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Finding the Fourth Proportional to 9,768.03, 13,479.95 and 5,291.78

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Solution

The fourth proportional to 9,768.03, 13,479.95 and 5,291.78 is: 7,302.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,768.03 : 13,479.95 = 5,291.78 : x
  2. Step 2: Convert to fraction form
    9,768.03/13,479.95 = 5,291.78/x
  3. Step 3: Cross multiply
    9,768.03x = 13,479.95 × 5,291.78
  4. Step 4: Simplify right side
    9,768.03x = 71,332,903.35
  5. Step 5: Solve for x
    x = 71,332,903.35/9,768.03
  6. Step 6: Final answer
    x = 7,302.69

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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.