Home / 2,015.81-2,781.94-1,342.45

Finding the Fourth Proportional to 2,015.81, 2,781.94 and 1,342.45

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Solution

The fourth proportional to 2,015.81, 2,781.94 and 1,342.45 is: 1,852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.81 : 2,781.94 = 1,342.45 : x
  2. Step 2: Convert to fraction form
    2,015.81/2,781.94 = 1,342.45/x
  3. Step 3: Cross multiply
    2,015.81x = 2,781.94 × 1,342.45
  4. Step 4: Simplify right side
    2,015.81x = 3,734,606.39
  5. Step 5: Solve for x
    x = 3,734,606.39/2,015.81
  6. Step 6: Final answer
    x = 1,852.66

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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.