Home / 3,979.02-5,492.16-2,486.10

Finding the Fourth Proportional to 3,979.02, 5,492.16 and 2,486.10

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Solution

The fourth proportional to 3,979.02, 5,492.16 and 2,486.10 is: 3,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.02 : 5,492.16 = 2,486.10 : x
  2. Step 2: Convert to fraction form
    3,979.02/5,492.16 = 2,486.10/x
  3. Step 3: Cross multiply
    3,979.02x = 5,492.16 × 2,486.10
  4. Step 4: Simplify right side
    3,979.02x = 13,654,058.98
  5. Step 5: Solve for x
    x = 13,654,058.98/3,979.02
  6. Step 6: Final answer
    x = 3,431.51

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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.