Home / 3,681.12-5,078.48-2,108.36

Finding the Fourth Proportional to 3,681.12, 5,078.48 and 2,108.36

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Solution

The fourth proportional to 3,681.12, 5,078.48 and 2,108.36 is: 2,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.12 : 5,078.48 = 2,108.36 : x
  2. Step 2: Convert to fraction form
    3,681.12/5,078.48 = 2,108.36/x
  3. Step 3: Cross multiply
    3,681.12x = 5,078.48 × 2,108.36
  4. Step 4: Simplify right side
    3,681.12x = 10,707,264.09
  5. Step 5: Solve for x
    x = 10,707,264.09/3,681.12
  6. Step 6: Final answer
    x = 2,908.70

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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.