Home / 3,117.51-4,299.35-2,408.29

Finding the Fourth Proportional to 3,117.51, 4,299.35 and 2,408.29

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Solution

The fourth proportional to 3,117.51, 4,299.35 and 2,408.29 is: 3,321.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.51 : 4,299.35 = 2,408.29 : x
  2. Step 2: Convert to fraction form
    3,117.51/4,299.35 = 2,408.29/x
  3. Step 3: Cross multiply
    3,117.51x = 4,299.35 × 2,408.29
  4. Step 4: Simplify right side
    3,117.51x = 10,354,076.88
  5. Step 5: Solve for x
    x = 10,354,076.88/3,117.51
  6. Step 6: Final answer
    x = 3,321.27

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Half scale
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Double scale
Find fourth proportional to 3,118.51, 4,300.73 and 2,409.29
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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.