Home / 1,690.25-2,332.28-944.18

Finding the Fourth Proportional to 1,690.25, 2,332.28 and 944.18

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Solution

The fourth proportional to 1,690.25, 2,332.28 and 944.18 is: 1,302.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.25 : 2,332.28 = 944.18 : x
  2. Step 2: Convert to fraction form
    1,690.25/2,332.28 = 944.18/x
  3. Step 3: Cross multiply
    1,690.25x = 2,332.28 × 944.18
  4. Step 4: Simplify right side
    1,690.25x = 2,202,092.13
  5. Step 5: Solve for x
    x = 2,202,092.13/1,690.25
  6. Step 6: Final answer
    x = 1,302.82

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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.