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Finding the Fourth Proportional to 3,880.76, 5,357.28 and 2,484.32

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Solution

The fourth proportional to 3,880.76, 5,357.28 and 2,484.32 is: 3,429.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.76 : 5,357.28 = 2,484.32 : x
  2. Step 2: Convert to fraction form
    3,880.76/5,357.28 = 2,484.32/x
  3. Step 3: Cross multiply
    3,880.76x = 5,357.28 × 2,484.32
  4. Step 4: Simplify right side
    3,880.76x = 13,309,197.85
  5. Step 5: Solve for x
    x = 13,309,197.85/3,880.76
  6. Step 6: Final answer
    x = 3,429.53

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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.