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Finding the Fourth Proportional to 8,266.65, 12,399.98 and 4,767.45

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Solution

The fourth proportional to 8,266.65, 12,399.98 and 4,767.45 is: 7,151.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.65 : 12,399.98 = 4,767.45 : x
  2. Step 2: Convert to fraction form
    8,266.65/12,399.98 = 4,767.45/x
  3. Step 3: Cross multiply
    8,266.65x = 12,399.98 × 4,767.45
  4. Step 4: Simplify right side
    8,266.65x = 59,116,260.81
  5. Step 5: Solve for x
    x = 59,116,260.81/8,266.65
  6. Step 6: Final answer
    x = 7,151.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.