Home / 3,117.39-4,301.91-1,720.14

Finding the Fourth Proportional to 3,117.39, 4,301.91 and 1,720.14

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Solution

The fourth proportional to 3,117.39, 4,301.91 and 1,720.14 is: 2,373.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.39 : 4,301.91 = 1,720.14 : x
  2. Step 2: Convert to fraction form
    3,117.39/4,301.91 = 1,720.14/x
  3. Step 3: Cross multiply
    3,117.39x = 4,301.91 × 1,720.14
  4. Step 4: Simplify right side
    3,117.39x = 7,399,887.47
  5. Step 5: Solve for x
    x = 7,399,887.47/3,117.39
  6. Step 6: Final answer
    x = 2,373.74

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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.