Home / 1,639.72-2,263.12-941.09

Finding the Fourth Proportional to 1,639.72, 2,263.12 and 941.09

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Solution

The fourth proportional to 1,639.72, 2,263.12 and 941.09 is: 1,298.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.72 : 2,263.12 = 941.09 : x
  2. Step 2: Convert to fraction form
    1,639.72/2,263.12 = 941.09/x
  3. Step 3: Cross multiply
    1,639.72x = 2,263.12 × 941.09
  4. Step 4: Simplify right side
    1,639.72x = 2,129,799.60
  5. Step 5: Solve for x
    x = 2,129,799.60/1,639.72
  6. Step 6: Final answer
    x = 1,298.88

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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.