Home / 3,285.61-4,531.57-2,106.79

Finding the Fourth Proportional to 3,285.61, 4,531.57 and 2,106.79

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Solution

The fourth proportional to 3,285.61, 4,531.57 and 2,106.79 is: 2,905.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.61 : 4,531.57 = 2,106.79 : x
  2. Step 2: Convert to fraction form
    3,285.61/4,531.57 = 2,106.79/x
  3. Step 3: Cross multiply
    3,285.61x = 4,531.57 × 2,106.79
  4. Step 4: Simplify right side
    3,285.61x = 9,547,049.76
  5. Step 5: Solve for x
    x = 9,547,049.76/3,285.61
  6. Step 6: Final answer
    x = 2,905.72

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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.