Home / 3,579.19-4,939.11-1,985.88

Finding the Fourth Proportional to 3,579.19, 4,939.11 and 1,985.88

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Solution

The fourth proportional to 3,579.19, 4,939.11 and 1,985.88 is: 2,740.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.19 : 4,939.11 = 1,985.88 : x
  2. Step 2: Convert to fraction form
    3,579.19/4,939.11 = 1,985.88/x
  3. Step 3: Cross multiply
    3,579.19x = 4,939.11 × 1,985.88
  4. Step 4: Simplify right side
    3,579.19x = 9,808,498.29
  5. Step 5: Solve for x
    x = 9,808,498.29/3,579.19
  6. Step 6: Final answer
    x = 2,740.43

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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.