Home / 1,687.43-2,328.61-941.35

Finding the Fourth Proportional to 1,687.43, 2,328.61 and 941.35

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Solution

The fourth proportional to 1,687.43, 2,328.61 and 941.35 is: 1,299.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.43 : 2,328.61 = 941.35 : x
  2. Step 2: Convert to fraction form
    1,687.43/2,328.61 = 941.35/x
  3. Step 3: Cross multiply
    1,687.43x = 2,328.61 × 941.35
  4. Step 4: Simplify right side
    1,687.43x = 2,192,037.02
  5. Step 5: Solve for x
    x = 2,192,037.02/1,687.43
  6. Step 6: Final answer
    x = 1,299.04

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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.