Home / 3,570.80-4,927.68-1,998.80

Finding the Fourth Proportional to 3,570.80, 4,927.68 and 1,998.80

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Solution

The fourth proportional to 3,570.80, 4,927.68 and 1,998.80 is: 2,758.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.80 : 4,927.68 = 1,998.80 : x
  2. Step 2: Convert to fraction form
    3,570.80/4,927.68 = 1,998.80/x
  3. Step 3: Cross multiply
    3,570.80x = 4,927.68 × 1,998.80
  4. Step 4: Simplify right side
    3,570.80x = 9,849,446.78
  5. Step 5: Solve for x
    x = 9,849,446.78/3,570.80
  6. Step 6: Final answer
    x = 2,758.33

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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.