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Finding the Fourth Proportional to 9,376.98, 12,868.77 and 8,490.84

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Solution

The fourth proportional to 9,376.98, 12,868.77 and 8,490.84 is: 11,652.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,376.98 : 12,868.77 = 8,490.84 : x
  2. Step 2: Convert to fraction form
    9,376.98/12,868.77 = 8,490.84/x
  3. Step 3: Cross multiply
    9,376.98x = 12,868.77 × 8,490.84
  4. Step 4: Simplify right side
    9,376.98x = 109,266,667.07
  5. Step 5: Solve for x
    x = 109,266,667.07/9,376.98
  6. Step 6: Final answer
    x = 11,652.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.