Home / 3,545.78-5,319.76-1,815.62

Finding the Fourth Proportional to 3,545.78, 5,319.76 and 1,815.62

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Solution

The fourth proportional to 3,545.78, 5,319.76 and 1,815.62 is: 2,723.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.78 : 5,319.76 = 1,815.62 : x
  2. Step 2: Convert to fraction form
    3,545.78/5,319.76 = 1,815.62/x
  3. Step 3: Cross multiply
    3,545.78x = 5,319.76 × 1,815.62
  4. Step 4: Simplify right side
    3,545.78x = 9,658,662.65
  5. Step 5: Solve for x
    x = 9,658,662.65/3,545.78
  6. Step 6: Final answer
    x = 2,723.99

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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.