Home / 2,685.78-3,705.99-1,637.64

Finding the Fourth Proportional to 2,685.78, 3,705.99 and 1,637.64

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Solution

The fourth proportional to 2,685.78, 3,705.99 and 1,637.64 is: 2,259.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.78 : 3,705.99 = 1,637.64 : x
  2. Step 2: Convert to fraction form
    2,685.78/3,705.99 = 1,637.64/x
  3. Step 3: Cross multiply
    2,685.78x = 3,705.99 × 1,637.64
  4. Step 4: Simplify right side
    2,685.78x = 6,069,077.46
  5. Step 5: Solve for x
    x = 6,069,077.46/2,685.78
  6. Step 6: Final answer
    x = 2,259.71

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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.