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Finding the Fourth Proportional to 8,436.96, 12,658.28 and 4,746.40

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Solution

The fourth proportional to 8,436.96, 12,658.28 and 4,746.40 is: 7,121.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.96 : 12,658.28 = 4,746.40 : x
  2. Step 2: Convert to fraction form
    8,436.96/12,658.28 = 4,746.40/x
  3. Step 3: Cross multiply
    8,436.96x = 12,658.28 × 4,746.40
  4. Step 4: Simplify right side
    8,436.96x = 60,081,204.81
  5. Step 5: Solve for x
    x = 60,081,204.81/8,436.96
  6. Step 6: Final answer
    x = 7,121.19

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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.