Home / 5,639.62-8,458.59-1,479.70

Finding the Fourth Proportional to 5,639.62, 8,458.59 and 1,479.70

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Solution

The fourth proportional to 5,639.62, 8,458.59 and 1,479.70 is: 2,219.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.62 : 8,458.59 = 1,479.70 : x
  2. Step 2: Convert to fraction form
    5,639.62/8,458.59 = 1,479.70/x
  3. Step 3: Cross multiply
    5,639.62x = 8,458.59 × 1,479.70
  4. Step 4: Simplify right side
    5,639.62x = 12,516,175.62
  5. Step 5: Solve for x
    x = 12,516,175.62/5,639.62
  6. Step 6: Final answer
    x = 2,219.33

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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.