Home / 8,210.16-12,315.31-3,529.85

Finding the Fourth Proportional to 8,210.16, 12,315.31 and 3,529.85

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Solution

The fourth proportional to 8,210.16, 12,315.31 and 3,529.85 is: 5,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.16 : 12,315.31 = 3,529.85 : x
  2. Step 2: Convert to fraction form
    8,210.16/12,315.31 = 3,529.85/x
  3. Step 3: Cross multiply
    8,210.16x = 12,315.31 × 3,529.85
  4. Step 4: Simplify right side
    8,210.16x = 43,471,126.60
  5. Step 5: Solve for x
    x = 43,471,126.60/8,210.16
  6. Step 6: Final answer
    x = 5,294.80

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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.