Home / 3,918.64-5,407.56-2,150.24

Finding the Fourth Proportional to 3,918.64, 5,407.56 and 2,150.24

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Solution

The fourth proportional to 3,918.64, 5,407.56 and 2,150.24 is: 2,967.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.64 : 5,407.56 = 2,150.24 : x
  2. Step 2: Convert to fraction form
    3,918.64/5,407.56 = 2,150.24/x
  3. Step 3: Cross multiply
    3,918.64x = 5,407.56 × 2,150.24
  4. Step 4: Simplify right side
    3,918.64x = 11,627,551.81
  5. Step 5: Solve for x
    x = 11,627,551.81/3,918.64
  6. Step 6: Final answer
    x = 2,967.24

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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.