Home / 3,117.47-4,302.11-1,720.22

Finding the Fourth Proportional to 3,117.47, 4,302.11 and 1,720.22

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Solution

The fourth proportional to 3,117.47, 4,302.11 and 1,720.22 is: 2,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.47 : 4,302.11 = 1,720.22 : x
  2. Step 2: Convert to fraction form
    3,117.47/4,302.11 = 1,720.22/x
  3. Step 3: Cross multiply
    3,117.47x = 4,302.11 × 1,720.22
  4. Step 4: Simplify right side
    3,117.47x = 7,400,545.55
  5. Step 5: Solve for x
    x = 7,400,545.55/3,117.47
  6. Step 6: Final answer
    x = 2,373.90

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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.