Home / 1,687.19-2,328.28-941.18

Finding the Fourth Proportional to 1,687.19, 2,328.28 and 941.18

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Solution

The fourth proportional to 1,687.19, 2,328.28 and 941.18 is: 1,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.19 : 2,328.28 = 941.18 : x
  2. Step 2: Convert to fraction form
    1,687.19/2,328.28 = 941.18/x
  3. Step 3: Cross multiply
    1,687.19x = 2,328.28 × 941.18
  4. Step 4: Simplify right side
    1,687.19x = 2,191,316.58
  5. Step 5: Solve for x
    x = 2,191,316.58/1,687.19
  6. Step 6: Final answer
    x = 1,298.80

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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.