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Finding the Fourth Proportional to 9,768.78, 13,480.88 and 5,292.41

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Solution

The fourth proportional to 9,768.78, 13,480.88 and 5,292.41 is: 7,303.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,768.78 : 13,480.88 = 5,292.41 : x
  2. Step 2: Convert to fraction form
    9,768.78/13,480.88 = 5,292.41/x
  3. Step 3: Cross multiply
    9,768.78x = 13,480.88 × 5,292.41
  4. Step 4: Simplify right side
    9,768.78x = 71,346,250.25
  5. Step 5: Solve for x
    x = 71,346,250.25/9,768.78
  6. Step 6: Final answer
    x = 7,303.50

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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.