Home / 1,690.28-2,332.35-944.15

Finding the Fourth Proportional to 1,690.28, 2,332.35 and 944.15

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Solution

The fourth proportional to 1,690.28, 2,332.35 and 944.15 is: 1,302.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.28 : 2,332.35 = 944.15 : x
  2. Step 2: Convert to fraction form
    1,690.28/2,332.35 = 944.15/x
  3. Step 3: Cross multiply
    1,690.28x = 2,332.35 × 944.15
  4. Step 4: Simplify right side
    1,690.28x = 2,202,080.13
  5. Step 5: Solve for x
    x = 2,202,080.13/1,690.28
  6. Step 6: Final answer
    x = 1,302.79

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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.