Home / 3,851.34-5,314.64-2,172.65

Finding the Fourth Proportional to 3,851.34, 5,314.64 and 2,172.65

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Solution

The fourth proportional to 3,851.34, 5,314.64 and 2,172.65 is: 2,998.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.34 : 5,314.64 = 2,172.65 : x
  2. Step 2: Convert to fraction form
    3,851.34/5,314.64 = 2,172.65/x
  3. Step 3: Cross multiply
    3,851.34x = 5,314.64 × 2,172.65
  4. Step 4: Simplify right side
    3,851.34x = 11,546,852.60
  5. Step 5: Solve for x
    x = 11,546,852.60/3,851.34
  6. Step 6: Final answer
    x = 2,998.14

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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.