Home / 2,686.86-3,705.04-2,126.44

Finding the Fourth Proportional to 2,686.86, 3,705.04 and 2,126.44

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Solution

The fourth proportional to 2,686.86, 3,705.04 and 2,126.44 is: 2,932.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.86 : 3,705.04 = 2,126.44 : x
  2. Step 2: Convert to fraction form
    2,686.86/3,705.04 = 2,126.44/x
  3. Step 3: Cross multiply
    2,686.86x = 3,705.04 × 2,126.44
  4. Step 4: Simplify right side
    2,686.86x = 7,878,545.26
  5. Step 5: Solve for x
    x = 7,878,545.26/2,686.86
  6. Step 6: Final answer
    x = 2,932.25

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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.