Home / 3,618.08-5,408.24-3,130.08

Finding the Fourth Proportional to 3,618.08, 5,408.24 and 3,130.08

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Solution

The fourth proportional to 3,618.08, 5,408.24 and 3,130.08 is: 4,678.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.08 : 5,408.24 = 3,130.08 : x
  2. Step 2: Convert to fraction form
    3,618.08/5,408.24 = 3,130.08/x
  3. Step 3: Cross multiply
    3,618.08x = 5,408.24 × 3,130.08
  4. Step 4: Simplify right side
    3,618.08x = 16,928,223.86
  5. Step 5: Solve for x
    x = 16,928,223.86/3,618.08
  6. Step 6: Final answer
    x = 4,678.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.