Home / 3,913.07-5,392.64-3,815.87

Finding the Fourth Proportional to 3,913.07, 5,392.64 and 3,815.87

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Solution

The fourth proportional to 3,913.07, 5,392.64 and 3,815.87 is: 5,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.07 : 5,392.64 = 3,815.87 : x
  2. Step 2: Convert to fraction form
    3,913.07/5,392.64 = 3,815.87/x
  3. Step 3: Cross multiply
    3,913.07x = 5,392.64 × 3,815.87
  4. Step 4: Simplify right side
    3,913.07x = 20,577,595.77
  5. Step 5: Solve for x
    x = 20,577,595.77/3,913.07
  6. Step 6: Final answer
    x = 5,258.69

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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.