Home / 5,058.39-6,979.77-2,820.21

Finding the Fourth Proportional to 5,058.39, 6,979.77 and 2,820.21

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Solution

The fourth proportional to 5,058.39, 6,979.77 and 2,820.21 is: 3,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.39 : 6,979.77 = 2,820.21 : x
  2. Step 2: Convert to fraction form
    5,058.39/6,979.77 = 2,820.21/x
  3. Step 3: Cross multiply
    5,058.39x = 6,979.77 × 2,820.21
  4. Step 4: Simplify right side
    5,058.39x = 19,684,417.15
  5. Step 5: Solve for x
    x = 19,684,417.15/5,058.39
  6. Step 6: Final answer
    x = 3,891.44

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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.