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Finding the Fourth Proportional to 5,318.26, 7,981.99 and 5,305.95

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Solution

The fourth proportional to 5,318.26, 7,981.99 and 5,305.95 is: 7,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.26 : 7,981.99 = 5,305.95 : x
  2. Step 2: Convert to fraction form
    5,318.26/7,981.99 = 5,305.95/x
  3. Step 3: Cross multiply
    5,318.26x = 7,981.99 × 5,305.95
  4. Step 4: Simplify right side
    5,318.26x = 42,352,026.58
  5. Step 5: Solve for x
    x = 42,352,026.58/5,318.26
  6. Step 6: Final answer
    x = 7,963.52

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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.