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Finding the Fourth Proportional to 2,975.76, 4,106.61 and 1,649.61

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Solution

The fourth proportional to 2,975.76, 4,106.61 and 1,649.61 is: 2,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.76 : 4,106.61 = 1,649.61 : x
  2. Step 2: Convert to fraction form
    2,975.76/4,106.61 = 1,649.61/x
  3. Step 3: Cross multiply
    2,975.76x = 4,106.61 × 1,649.61
  4. Step 4: Simplify right side
    2,975.76x = 6,774,304.92
  5. Step 5: Solve for x
    x = 6,774,304.92/2,975.76
  6. Step 6: Final answer
    x = 2,276.50

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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.