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Finding the Fourth Proportional to 9,768.74, 13,474.77 and 6,411.74

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Solution

The fourth proportional to 9,768.74, 13,474.77 and 6,411.74 is: 8,844.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,768.74 : 13,474.77 = 6,411.74 : x
  2. Step 2: Convert to fraction form
    9,768.74/13,474.77 = 6,411.74/x
  3. Step 3: Cross multiply
    9,768.74x = 13,474.77 × 6,411.74
  4. Step 4: Simplify right side
    9,768.74x = 86,396,721.80
  5. Step 5: Solve for x
    x = 86,396,721.80/9,768.74
  6. Step 6: Final answer
    x = 8,844.20

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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.