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Finding the Fourth Proportional to 9,356.16, 12,900.72 and 6,373.80

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Solution

The fourth proportional to 9,356.16, 12,900.72 and 6,373.80 is: 8,788.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,356.16 : 12,900.72 = 6,373.80 : x
  2. Step 2: Convert to fraction form
    9,356.16/12,900.72 = 6,373.80/x
  3. Step 3: Cross multiply
    9,356.16x = 12,900.72 × 6,373.80
  4. Step 4: Simplify right side
    9,356.16x = 82,226,609.14
  5. Step 5: Solve for x
    x = 82,226,609.14/9,356.16
  6. Step 6: Final answer
    x = 8,788.50

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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.