Home / 3,581.60-4,942.80-1,988.44

Finding the Fourth Proportional to 3,581.60, 4,942.80 and 1,988.44

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Solution

The fourth proportional to 3,581.60, 4,942.80 and 1,988.44 is: 2,744.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.60 : 4,942.80 = 1,988.44 : x
  2. Step 2: Convert to fraction form
    3,581.60/4,942.80 = 1,988.44/x
  3. Step 3: Cross multiply
    3,581.60x = 4,942.80 × 1,988.44
  4. Step 4: Simplify right side
    3,581.60x = 9,828,461.23
  5. Step 5: Solve for x
    x = 9,828,461.23/3,581.60
  6. Step 6: Final answer
    x = 2,744.15

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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.