Home / 8,317.28-12,465.90-3,315.74

Finding the Fourth Proportional to 8,317.28, 12,465.90 and 3,315.74

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Solution

The fourth proportional to 8,317.28, 12,465.90 and 3,315.74 is: 4,969.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.28 : 12,465.90 = 3,315.74 : x
  2. Step 2: Convert to fraction form
    8,317.28/12,465.90 = 3,315.74/x
  3. Step 3: Cross multiply
    8,317.28x = 12,465.90 × 3,315.74
  4. Step 4: Simplify right side
    8,317.28x = 41,333,620.94
  5. Step 5: Solve for x
    x = 41,333,620.94/8,317.28
  6. Step 6: Final answer
    x = 4,969.61

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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.