Home / 8,919.20-13,377.74-2,345.90

Finding the Fourth Proportional to 8,919.20, 13,377.74 and 2,345.90

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Solution

The fourth proportional to 8,919.20, 13,377.74 and 2,345.90 is: 3,518.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.20 : 13,377.74 = 2,345.90 : x
  2. Step 2: Convert to fraction form
    8,919.20/13,377.74 = 2,345.90/x
  3. Step 3: Cross multiply
    8,919.20x = 13,377.74 × 2,345.90
  4. Step 4: Simplify right side
    8,919.20x = 31,382,840.27
  5. Step 5: Solve for x
    x = 31,382,840.27/8,919.20
  6. Step 6: Final answer
    x = 3,518.57

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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.