Home / 4,309.30-6,464.85-1,389.61

Finding the Fourth Proportional to 4,309.30, 6,464.85 and 1,389.61

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Solution

The fourth proportional to 4,309.30, 6,464.85 and 1,389.61 is: 2,084.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.30 : 6,464.85 = 1,389.61 : x
  2. Step 2: Convert to fraction form
    4,309.30/6,464.85 = 1,389.61/x
  3. Step 3: Cross multiply
    4,309.30x = 6,464.85 × 1,389.61
  4. Step 4: Simplify right side
    4,309.30x = 8,983,620.21
  5. Step 5: Solve for x
    x = 8,983,620.21/4,309.30
  6. Step 6: Final answer
    x = 2,084.71

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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.