Home / 1,637.38-2,259.60-938.75

Finding the Fourth Proportional to 1,637.38, 2,259.60 and 938.75

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Solution

The fourth proportional to 1,637.38, 2,259.60 and 938.75 is: 1,295.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.38 : 2,259.60 = 938.75 : x
  2. Step 2: Convert to fraction form
    1,637.38/2,259.60 = 938.75/x
  3. Step 3: Cross multiply
    1,637.38x = 2,259.60 × 938.75
  4. Step 4: Simplify right side
    1,637.38x = 2,121,199.50
  5. Step 5: Solve for x
    x = 2,121,199.50/1,637.38
  6. Step 6: Final answer
    x = 1,295.48

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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.