Home / 1,687.16-2,328.30-941.16

Finding the Fourth Proportional to 1,687.16, 2,328.30 and 941.16

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Solution

The fourth proportional to 1,687.16, 2,328.30 and 941.16 is: 1,298.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.16 : 2,328.30 = 941.16 : x
  2. Step 2: Convert to fraction form
    1,687.16/2,328.30 = 941.16/x
  3. Step 3: Cross multiply
    1,687.16x = 2,328.30 × 941.16
  4. Step 4: Simplify right side
    1,687.16x = 2,191,302.83
  5. Step 5: Solve for x
    x = 2,191,302.83/1,687.16
  6. Step 6: Final answer
    x = 1,298.82

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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.