Home / 3,607.21-4,979.19-2,115.61

Finding the Fourth Proportional to 3,607.21, 4,979.19 and 2,115.61

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Solution

The fourth proportional to 3,607.21, 4,979.19 and 2,115.61 is: 2,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.21 : 4,979.19 = 2,115.61 : x
  2. Step 2: Convert to fraction form
    3,607.21/4,979.19 = 2,115.61/x
  3. Step 3: Cross multiply
    3,607.21x = 4,979.19 × 2,115.61
  4. Step 4: Simplify right side
    3,607.21x = 10,534,024.16
  5. Step 5: Solve for x
    x = 10,534,024.16/3,607.21
  6. Step 6: Final answer
    x = 2,920.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.