Home / 3,918.45-5,407.47-2,150.06

Finding the Fourth Proportional to 3,918.45, 5,407.47 and 2,150.06

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Solution

The fourth proportional to 3,918.45, 5,407.47 and 2,150.06 is: 2,967.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.45 : 5,407.47 = 2,150.06 : x
  2. Step 2: Convert to fraction form
    3,918.45/5,407.47 = 2,150.06/x
  3. Step 3: Cross multiply
    3,918.45x = 5,407.47 × 2,150.06
  4. Step 4: Simplify right side
    3,918.45x = 11,626,357.91
  5. Step 5: Solve for x
    x = 11,626,357.91/3,918.45
  6. Step 6: Final answer
    x = 2,967.08

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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.