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Finding the Fourth Proportional to 1,951, 2,926.16 and 652.40

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Solution

The fourth proportional to 1,951, 2,926.16 and 652.40 is: 978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951 : 2,926.16 = 652.40 : x
  2. Step 2: Convert to fraction form
    1,951/2,926.16 = 652.40/x
  3. Step 3: Cross multiply
    1,951x = 2,926.16 × 652.40
  4. Step 4: Simplify right side
    1,951x = 1,909,026.78
  5. Step 5: Solve for x
    x = 1,909,026.78/1,951
  6. Step 6: Final answer
    x = 978.49

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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.