Home / 2,864.97-3,953.61-1,686.15

Finding the Fourth Proportional to 2,864.97, 3,953.61 and 1,686.15

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Solution

The fourth proportional to 2,864.97, 3,953.61 and 1,686.15 is: 2,326.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.97 : 3,953.61 = 1,686.15 : x
  2. Step 2: Convert to fraction form
    2,864.97/3,953.61 = 1,686.15/x
  3. Step 3: Cross multiply
    2,864.97x = 3,953.61 × 1,686.15
  4. Step 4: Simplify right side
    2,864.97x = 6,666,379.50
  5. Step 5: Solve for x
    x = 6,666,379.50/2,864.97
  6. Step 6: Final answer
    x = 2,326.86

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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.