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Finding the Fourth Proportional to 7,315.52, 10,095 and 4,172

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Solution

The fourth proportional to 7,315.52, 10,095 and 4,172 is: 5,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.52 : 10,095 = 4,172 : x
  2. Step 2: Convert to fraction form
    7,315.52/10,095 = 4,172/x
  3. Step 3: Cross multiply
    7,315.52x = 10,095 × 4,172
  4. Step 4: Simplify right side
    7,315.52x = 42,116,340
  5. Step 5: Solve for x
    x = 42,116,340/7,315.52
  6. Step 6: Final answer
    x = 5,757.12

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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.