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Finding the Fourth Proportional to 8,318.34, 12,477.42 and 7,903.08

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Solution

The fourth proportional to 8,318.34, 12,477.42 and 7,903.08 is: 11,854.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.34 : 12,477.42 = 7,903.08 : x
  2. Step 2: Convert to fraction form
    8,318.34/12,477.42 = 7,903.08/x
  3. Step 3: Cross multiply
    8,318.34x = 12,477.42 × 7,903.08
  4. Step 4: Simplify right side
    8,318.34x = 98,610,048.45
  5. Step 5: Solve for x
    x = 98,610,048.45/8,318.34
  6. Step 6: Final answer
    x = 11,854.53

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Similar ratio
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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.