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Finding the Fourth Proportional to 1,929.66, 2,894.49 and 1,355.10

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Solution

The fourth proportional to 1,929.66, 2,894.49 and 1,355.10 is: 2,032.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.66 : 2,894.49 = 1,355.10 : x
  2. Step 2: Convert to fraction form
    1,929.66/2,894.49 = 1,355.10/x
  3. Step 3: Cross multiply
    1,929.66x = 2,894.49 × 1,355.10
  4. Step 4: Simplify right side
    1,929.66x = 3,922,323.40
  5. Step 5: Solve for x
    x = 3,922,323.40/1,929.66
  6. Step 6: Final answer
    x = 2,032.65

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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.