Home / 5,639.87-8,458.97-1,479.95

Finding the Fourth Proportional to 5,639.87, 8,458.97 and 1,479.95

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Solution

The fourth proportional to 5,639.87, 8,458.97 and 1,479.95 is: 2,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.87 : 8,458.97 = 1,479.95 : x
  2. Step 2: Convert to fraction form
    5,639.87/8,458.97 = 1,479.95/x
  3. Step 3: Cross multiply
    5,639.87x = 8,458.97 × 1,479.95
  4. Step 4: Simplify right side
    5,639.87x = 12,518,845.25
  5. Step 5: Solve for x
    x = 12,518,845.25/5,639.87
  6. Step 6: Final answer
    x = 2,219.70

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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.