Home / 3,172.37-4,378.19-1,756.22

Finding the Fourth Proportional to 3,172.37, 4,378.19 and 1,756.22

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Solution

The fourth proportional to 3,172.37, 4,378.19 and 1,756.22 is: 2,423.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.37 : 4,378.19 = 1,756.22 : x
  2. Step 2: Convert to fraction form
    3,172.37/4,378.19 = 1,756.22/x
  3. Step 3: Cross multiply
    3,172.37x = 4,378.19 × 1,756.22
  4. Step 4: Simplify right side
    3,172.37x = 7,689,034.17
  5. Step 5: Solve for x
    x = 7,689,034.17/3,172.37
  6. Step 6: Final answer
    x = 2,423.75

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Half scale
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Double scale
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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.