Home / 3,650.78-5,036.91-2,159.21

Finding the Fourth Proportional to 3,650.78, 5,036.91 and 2,159.21

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Solution

The fourth proportional to 3,650.78, 5,036.91 and 2,159.21 is: 2,979.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,650.78 : 5,036.91 = 2,159.21 : x
  2. Step 2: Convert to fraction form
    3,650.78/5,036.91 = 2,159.21/x
  3. Step 3: Cross multiply
    3,650.78x = 5,036.91 × 2,159.21
  4. Step 4: Simplify right side
    3,650.78x = 10,875,721.26
  5. Step 5: Solve for x
    x = 10,875,721.26/3,650.78
  6. Step 6: Final answer
    x = 2,979.02

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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.