Home / 1,923.81-2,655.14-1,138.11

Finding the Fourth Proportional to 1,923.81, 2,655.14 and 1,138.11

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Solution

The fourth proportional to 1,923.81, 2,655.14 and 1,138.11 is: 1,570.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923.81 : 2,655.14 = 1,138.11 : x
  2. Step 2: Convert to fraction form
    1,923.81/2,655.14 = 1,138.11/x
  3. Step 3: Cross multiply
    1,923.81x = 2,655.14 × 1,138.11
  4. Step 4: Simplify right side
    1,923.81x = 3,021,841.39
  5. Step 5: Solve for x
    x = 3,021,841.39/1,923.81
  6. Step 6: Final answer
    x = 1,570.76

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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.