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Finding the Fourth Proportional to 2,929, 4,393.50 and 877

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Solution

The fourth proportional to 2,929, 4,393.50 and 877 is: 1,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929 : 4,393.50 = 877 : x
  2. Step 2: Convert to fraction form
    2,929/4,393.50 = 877/x
  3. Step 3: Cross multiply
    2,929x = 4,393.50 × 877
  4. Step 4: Simplify right side
    2,929x = 3,853,099.50
  5. Step 5: Solve for x
    x = 3,853,099.50/2,929
  6. Step 6: Final answer
    x = 1,315.50

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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.