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Finding the Fourth Proportional to 1,929.66, 2,662.93 and 1,045.49

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Solution

The fourth proportional to 1,929.66, 2,662.93 and 1,045.49 is: 1,442.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.66 : 2,662.93 = 1,045.49 : x
  2. Step 2: Convert to fraction form
    1,929.66/2,662.93 = 1,045.49/x
  3. Step 3: Cross multiply
    1,929.66x = 2,662.93 × 1,045.49
  4. Step 4: Simplify right side
    1,929.66x = 2,784,050.76
  5. Step 5: Solve for x
    x = 2,784,050.76/1,929.66
  6. Step 6: Final answer
    x = 1,442.77

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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.