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Finding the Fourth Proportional to 8,703.95, 12,951.23 and 8,674.79

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Solution

The fourth proportional to 8,703.95, 12,951.23 and 8,674.79 is: 12,907.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.95 : 12,951.23 = 8,674.79 : x
  2. Step 2: Convert to fraction form
    8,703.95/12,951.23 = 8,674.79/x
  3. Step 3: Cross multiply
    8,703.95x = 12,951.23 × 8,674.79
  4. Step 4: Simplify right side
    8,703.95x = 112,349,092.36
  5. Step 5: Solve for x
    x = 112,349,092.36/8,703.95
  6. Step 6: Final answer
    x = 12,907.84

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.