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Finding the Fourth Proportional to 3,095.76, 4,272.17 and 1,679.45

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Solution

The fourth proportional to 3,095.76, 4,272.17 and 1,679.45 is: 2,317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,095.76 : 4,272.17 = 1,679.45 : x
  2. Step 2: Convert to fraction form
    3,095.76/4,272.17 = 1,679.45/x
  3. Step 3: Cross multiply
    3,095.76x = 4,272.17 × 1,679.45
  4. Step 4: Simplify right side
    3,095.76x = 7,174,866.15
  5. Step 5: Solve for x
    x = 7,174,866.15/3,095.76
  6. Step 6: Final answer
    x = 2,317.64

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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.