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Finding the Fourth Proportional to 1,929.61, 2,895.23 and 697.60

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Solution

The fourth proportional to 1,929.61, 2,895.23 and 697.60 is: 1,046.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.61 : 2,895.23 = 697.60 : x
  2. Step 2: Convert to fraction form
    1,929.61/2,895.23 = 697.60/x
  3. Step 3: Cross multiply
    1,929.61x = 2,895.23 × 697.60
  4. Step 4: Simplify right side
    1,929.61x = 2,019,712.45
  5. Step 5: Solve for x
    x = 2,019,712.45/1,929.61
  6. Step 6: Final answer
    x = 1,046.69

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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.