Home / 1,377.90-2,055.62-1,133.69

Finding the Fourth Proportional to 1,377.90, 2,055.62 and 1,133.69

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Solution

The fourth proportional to 1,377.90, 2,055.62 and 1,133.69 is: 1,691.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.90 : 2,055.62 = 1,133.69 : x
  2. Step 2: Convert to fraction form
    1,377.90/2,055.62 = 1,133.69/x
  3. Step 3: Cross multiply
    1,377.90x = 2,055.62 × 1,133.69
  4. Step 4: Simplify right side
    1,377.90x = 2,330,428.39
  5. Step 5: Solve for x
    x = 2,330,428.39/1,377.90
  6. Step 6: Final answer
    x = 1,691.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.