Home / 2,866.05-3,953.61-1,686.42

Finding the Fourth Proportional to 2,866.05, 3,953.61 and 1,686.42

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Solution

The fourth proportional to 2,866.05, 3,953.61 and 1,686.42 is: 2,326.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.05 : 3,953.61 = 1,686.42 : x
  2. Step 2: Convert to fraction form
    2,866.05/3,953.61 = 1,686.42/x
  3. Step 3: Cross multiply
    2,866.05x = 3,953.61 × 1,686.42
  4. Step 4: Simplify right side
    2,866.05x = 6,667,446.98
  5. Step 5: Solve for x
    x = 6,667,446.98/2,866.05
  6. Step 6: Final answer
    x = 2,326.35

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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.