Home / 2,710.80-3,742.20-1,965.60

Finding the Fourth Proportional to 2,710.80, 3,742.20 and 1,965.60

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Solution

The fourth proportional to 2,710.80, 3,742.20 and 1,965.60 is: 2,713.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,710.80 : 3,742.20 = 1,965.60 : x
  2. Step 2: Convert to fraction form
    2,710.80/3,742.20 = 1,965.60/x
  3. Step 3: Cross multiply
    2,710.80x = 3,742.20 × 1,965.60
  4. Step 4: Simplify right side
    2,710.80x = 7,355,668.32
  5. Step 5: Solve for x
    x = 7,355,668.32/2,710.80
  6. Step 6: Final answer
    x = 2,713.47

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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.