Home / 3,886.07-5,362.78-2,117.64

Finding the Fourth Proportional to 3,886.07, 5,362.78 and 2,117.64

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Solution

The fourth proportional to 3,886.07, 5,362.78 and 2,117.64 is: 2,922.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.07 : 5,362.78 = 2,117.64 : x
  2. Step 2: Convert to fraction form
    3,886.07/5,362.78 = 2,117.64/x
  3. Step 3: Cross multiply
    3,886.07x = 5,362.78 × 2,117.64
  4. Step 4: Simplify right side
    3,886.07x = 11,356,437.44
  5. Step 5: Solve for x
    x = 11,356,437.44/3,886.07
  6. Step 6: Final answer
    x = 2,922.35

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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.