Home / 3,189.72-4,785.48-1,339.86

Finding the Fourth Proportional to 3,189.72, 4,785.48 and 1,339.86

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Solution

The fourth proportional to 3,189.72, 4,785.48 and 1,339.86 is: 2,010.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.72 : 4,785.48 = 1,339.86 : x
  2. Step 2: Convert to fraction form
    3,189.72/4,785.48 = 1,339.86/x
  3. Step 3: Cross multiply
    3,189.72x = 4,785.48 × 1,339.86
  4. Step 4: Simplify right side
    3,189.72x = 6,411,873.23
  5. Step 5: Solve for x
    x = 6,411,873.23/3,189.72
  6. Step 6: Final answer
    x = 2,010.17

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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.