Home / 1,628.28-2,247.06-929.64

Finding the Fourth Proportional to 1,628.28, 2,247.06 and 929.64

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Solution

The fourth proportional to 1,628.28, 2,247.06 and 929.64 is: 1,282.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.28 : 2,247.06 = 929.64 : x
  2. Step 2: Convert to fraction form
    1,628.28/2,247.06 = 929.64/x
  3. Step 3: Cross multiply
    1,628.28x = 2,247.06 × 929.64
  4. Step 4: Simplify right side
    1,628.28x = 2,088,956.86
  5. Step 5: Solve for x
    x = 2,088,956.86/1,628.28
  6. Step 6: Final answer
    x = 1,282.92

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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.