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Finding the Fourth Proportional to 2,913.18, 4,370.06 and 965.53

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Solution

The fourth proportional to 2,913.18, 4,370.06 and 965.53 is: 1,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.18 : 4,370.06 = 965.53 : x
  2. Step 2: Convert to fraction form
    2,913.18/4,370.06 = 965.53/x
  3. Step 3: Cross multiply
    2,913.18x = 4,370.06 × 965.53
  4. Step 4: Simplify right side
    2,913.18x = 4,219,424.03
  5. Step 5: Solve for x
    x = 4,219,424.03/2,913.18
  6. Step 6: Final answer
    x = 1,448.39

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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.