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Finding the Fourth Proportional to 1,952.37, 2,929.47 and 1,221.55

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Solution

The fourth proportional to 1,952.37, 2,929.47 and 1,221.55 is: 1,832.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,952.37 : 2,929.47 = 1,221.55 : x
  2. Step 2: Convert to fraction form
    1,952.37/2,929.47 = 1,221.55/x
  3. Step 3: Cross multiply
    1,952.37x = 2,929.47 × 1,221.55
  4. Step 4: Simplify right side
    1,952.37x = 3,578,482.17
  5. Step 5: Solve for x
    x = 3,578,482.17/1,952.37
  6. Step 6: Final answer
    x = 1,832.89

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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.