Home / 3,117.60-4,299.48-2,239.08

Finding the Fourth Proportional to 3,117.60, 4,299.48 and 2,239.08

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Solution

The fourth proportional to 3,117.60, 4,299.48 and 2,239.08 is: 3,087.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.60 : 4,299.48 = 2,239.08 : x
  2. Step 2: Convert to fraction form
    3,117.60/4,299.48 = 2,239.08/x
  3. Step 3: Cross multiply
    3,117.60x = 4,299.48 × 2,239.08
  4. Step 4: Simplify right side
    3,117.60x = 9,626,879.68
  5. Step 5: Solve for x
    x = 9,626,879.68/3,117.60
  6. Step 6: Final answer
    x = 3,087.91

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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.