Home / 2,919.24-4,379.64-1,621.62

Finding the Fourth Proportional to 2,919.24, 4,379.64 and 1,621.62

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Solution

The fourth proportional to 2,919.24, 4,379.64 and 1,621.62 is: 2,432.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.24 : 4,379.64 = 1,621.62 : x
  2. Step 2: Convert to fraction form
    2,919.24/4,379.64 = 1,621.62/x
  3. Step 3: Cross multiply
    2,919.24x = 4,379.64 × 1,621.62
  4. Step 4: Simplify right side
    2,919.24x = 7,102,111.82
  5. Step 5: Solve for x
    x = 7,102,111.82/2,919.24
  6. Step 6: Final answer
    x = 2,432.86

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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.