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Finding the Fourth Proportional to 8,475.72, 12,706.02 and 4,313.40

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Solution

The fourth proportional to 8,475.72, 12,706.02 and 4,313.40 is: 6,466.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,475.72 : 12,706.02 = 4,313.40 : x
  2. Step 2: Convert to fraction form
    8,475.72/12,706.02 = 4,313.40/x
  3. Step 3: Cross multiply
    8,475.72x = 12,706.02 × 4,313.40
  4. Step 4: Simplify right side
    8,475.72x = 54,806,146.67
  5. Step 5: Solve for x
    x = 54,806,146.67/8,475.72
  6. Step 6: Final answer
    x = 6,466.25

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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.