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Finding the Fourth Proportional to 1,968.78, 2,952.48 and 652.30

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Solution

The fourth proportional to 1,968.78, 2,952.48 and 652.30 is: 978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.78 : 2,952.48 = 652.30 : x
  2. Step 2: Convert to fraction form
    1,968.78/2,952.48 = 652.30/x
  3. Step 3: Cross multiply
    1,968.78x = 2,952.48 × 652.30
  4. Step 4: Simplify right side
    1,968.78x = 1,925,908.87
  5. Step 5: Solve for x
    x = 1,925,908.87/1,968.78
  6. Step 6: Final answer
    x = 978.22

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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.