Home / 2,781.40-3,838.98-1,837.36

Finding the Fourth Proportional to 2,781.40, 3,838.98 and 1,837.36

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Solution

The fourth proportional to 2,781.40, 3,838.98 and 1,837.36 is: 2,535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.40 : 3,838.98 = 1,837.36 : x
  2. Step 2: Convert to fraction form
    2,781.40/3,838.98 = 1,837.36/x
  3. Step 3: Cross multiply
    2,781.40x = 3,838.98 × 1,837.36
  4. Step 4: Simplify right side
    2,781.40x = 7,053,588.29
  5. Step 5: Solve for x
    x = 7,053,588.29/2,781.40
  6. Step 6: Final answer
    x = 2,535.98

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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.