Home / 2,686.12-3,705.74-1,637.80

Finding the Fourth Proportional to 2,686.12, 3,705.74 and 1,637.80

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Solution

The fourth proportional to 2,686.12, 3,705.74 and 1,637.80 is: 2,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.12 : 3,705.74 = 1,637.80 : x
  2. Step 2: Convert to fraction form
    2,686.12/3,705.74 = 1,637.80/x
  3. Step 3: Cross multiply
    2,686.12x = 3,705.74 × 1,637.80
  4. Step 4: Simplify right side
    2,686.12x = 6,069,260.97
  5. Step 5: Solve for x
    x = 6,069,260.97/2,686.12
  6. Step 6: Final answer
    x = 2,259.49

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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.