Home / 1,929.32-2,894.39-630.69

Finding the Fourth Proportional to 1,929.32, 2,894.39 and 630.69

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Solution

The fourth proportional to 1,929.32, 2,894.39 and 630.69 is: 946.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.32 : 2,894.39 = 630.69 : x
  2. Step 2: Convert to fraction form
    1,929.32/2,894.39 = 630.69/x
  3. Step 3: Cross multiply
    1,929.32x = 2,894.39 × 630.69
  4. Step 4: Simplify right side
    1,929.32x = 1,825,459.68
  5. Step 5: Solve for x
    x = 1,825,459.68/1,929.32
  6. Step 6: Final answer
    x = 946.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.