Home / 3,979.98-5,488.69-2,705.77

Finding the Fourth Proportional to 3,979.98, 5,488.69 and 2,705.77

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Solution

The fourth proportional to 3,979.98, 5,488.69 and 2,705.77 is: 3,731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.98 : 5,488.69 = 2,705.77 : x
  2. Step 2: Convert to fraction form
    3,979.98/5,488.69 = 2,705.77/x
  3. Step 3: Cross multiply
    3,979.98x = 5,488.69 × 2,705.77
  4. Step 4: Simplify right side
    3,979.98x = 14,851,132.74
  5. Step 5: Solve for x
    x = 14,851,132.74/3,979.98
  6. Step 6: Final answer
    x = 3,731.46

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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.