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Finding the Fourth Proportional to 3,257.95, 4,495.70 and 1,913.42

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Solution

The fourth proportional to 3,257.95, 4,495.70 and 1,913.42 is: 2,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,257.95 : 4,495.70 = 1,913.42 : x
  2. Step 2: Convert to fraction form
    3,257.95/4,495.70 = 1,913.42/x
  3. Step 3: Cross multiply
    3,257.95x = 4,495.70 × 1,913.42
  4. Step 4: Simplify right side
    3,257.95x = 8,602,130.25
  5. Step 5: Solve for x
    x = 8,602,130.25/3,257.95
  6. Step 6: Final answer
    x = 2,640.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.