Home / 3,876.32-5,813.40-1,686.08

Finding the Fourth Proportional to 3,876.32, 5,813.40 and 1,686.08

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Solution

The fourth proportional to 3,876.32, 5,813.40 and 1,686.08 is: 2,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.32 : 5,813.40 = 1,686.08 : x
  2. Step 2: Convert to fraction form
    3,876.32/5,813.40 = 1,686.08/x
  3. Step 3: Cross multiply
    3,876.32x = 5,813.40 × 1,686.08
  4. Step 4: Simplify right side
    3,876.32x = 9,801,857.47
  5. Step 5: Solve for x
    x = 9,801,857.47/3,876.32
  6. Step 6: Final answer
    x = 2,528.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.