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Finding the Fourth Proportional to 8,455.30, 12,694.35 and 4,948.90

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Solution

The fourth proportional to 8,455.30, 12,694.35 and 4,948.90 is: 7,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.30 : 12,694.35 = 4,948.90 : x
  2. Step 2: Convert to fraction form
    8,455.30/12,694.35 = 4,948.90/x
  3. Step 3: Cross multiply
    8,455.30x = 12,694.35 × 4,948.90
  4. Step 4: Simplify right side
    8,455.30x = 62,823,068.72
  5. Step 5: Solve for x
    x = 62,823,068.72/8,455.30
  6. Step 6: Final answer
    x = 7,430.02

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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.