Home / 3,117.60-4,301.91-1,720.26

Finding the Fourth Proportional to 3,117.60, 4,301.91 and 1,720.26

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Solution

The fourth proportional to 3,117.60, 4,301.91 and 1,720.26 is: 2,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.60 : 4,301.91 = 1,720.26 : x
  2. Step 2: Convert to fraction form
    3,117.60/4,301.91 = 1,720.26/x
  3. Step 3: Cross multiply
    3,117.60x = 4,301.91 × 1,720.26
  4. Step 4: Simplify right side
    3,117.60x = 7,400,403.70
  5. Step 5: Solve for x
    x = 7,400,403.70/3,117.60
  6. Step 6: Final answer
    x = 2,373.75

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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.