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Finding the Fourth Proportional to 3,310, 4,568.64 and 1,913.56

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Solution

The fourth proportional to 3,310, 4,568.64 and 1,913.56 is: 2,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,310 : 4,568.64 = 1,913.56 : x
  2. Step 2: Convert to fraction form
    3,310/4,568.64 = 1,913.56/x
  3. Step 3: Cross multiply
    3,310x = 4,568.64 × 1,913.56
  4. Step 4: Simplify right side
    3,310x = 8,742,366.76
  5. Step 5: Solve for x
    x = 8,742,366.76/3,310
  6. Step 6: Final answer
    x = 2,641.20

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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.