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Finding the Fourth Proportional to 9,703.76, 13,377.62 and 8,205.66

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Solution

The fourth proportional to 9,703.76, 13,377.62 and 8,205.66 is: 11,312.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,703.76 : 13,377.62 = 8,205.66 : x
  2. Step 2: Convert to fraction form
    9,703.76/13,377.62 = 8,205.66/x
  3. Step 3: Cross multiply
    9,703.76x = 13,377.62 × 8,205.66
  4. Step 4: Simplify right side
    9,703.76x = 109,772,221.84
  5. Step 5: Solve for x
    x = 109,772,221.84/9,703.76
  6. Step 6: Final answer
    x = 11,312.34

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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.