Home / 3,719.34-5,132.64-2,147.40

Finding the Fourth Proportional to 3,719.34, 5,132.64 and 2,147.40

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Solution

The fourth proportional to 3,719.34, 5,132.64 and 2,147.40 is: 2,963.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.34 : 5,132.64 = 2,147.40 : x
  2. Step 2: Convert to fraction form
    3,719.34/5,132.64 = 2,147.40/x
  3. Step 3: Cross multiply
    3,719.34x = 5,132.64 × 2,147.40
  4. Step 4: Simplify right side
    3,719.34x = 11,021,831.14
  5. Step 5: Solve for x
    x = 11,021,831.14/3,719.34
  6. Step 6: Final answer
    x = 2,963.38

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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.