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Finding the Fourth Proportional to 7,315.89, 10,095.75 and 4,171.89

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Solution

The fourth proportional to 7,315.89, 10,095.75 and 4,171.89 is: 5,757.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.89 : 10,095.75 = 4,171.89 : x
  2. Step 2: Convert to fraction form
    7,315.89/10,095.75 = 4,171.89/x
  3. Step 3: Cross multiply
    7,315.89x = 10,095.75 × 4,171.89
  4. Step 4: Simplify right side
    7,315.89x = 42,118,358.47
  5. Step 5: Solve for x
    x = 42,118,358.47/7,315.89
  6. Step 6: Final answer
    x = 5,757.11

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1.5x scale

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.