Home / 1,961.30-2,706.60-1,077.12

Finding the Fourth Proportional to 1,961.30, 2,706.60 and 1,077.12

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Solution

The fourth proportional to 1,961.30, 2,706.60 and 1,077.12 is: 1,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.30 : 2,706.60 = 1,077.12 : x
  2. Step 2: Convert to fraction form
    1,961.30/2,706.60 = 1,077.12/x
  3. Step 3: Cross multiply
    1,961.30x = 2,706.60 × 1,077.12
  4. Step 4: Simplify right side
    1,961.30x = 2,915,332.99
  5. Step 5: Solve for x
    x = 2,915,332.99/1,961.30
  6. Step 6: Final answer
    x = 1,486.43

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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.