Home / 3,172.68-4,378.21-1,756.33

Finding the Fourth Proportional to 3,172.68, 4,378.21 and 1,756.33

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Solution

The fourth proportional to 3,172.68, 4,378.21 and 1,756.33 is: 2,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.68 : 4,378.21 = 1,756.33 : x
  2. Step 2: Convert to fraction form
    3,172.68/4,378.21 = 1,756.33/x
  3. Step 3: Cross multiply
    3,172.68x = 4,378.21 × 1,756.33
  4. Step 4: Simplify right side
    3,172.68x = 7,689,581.57
  5. Step 5: Solve for x
    x = 7,689,581.57/3,172.68
  6. Step 6: Final answer
    x = 2,423.69

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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.