Home / 1,455.40-2,186.81-1,371.38

Finding the Fourth Proportional to 1,455.40, 2,186.81 and 1,371.38

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Solution

The fourth proportional to 1,455.40, 2,186.81 and 1,371.38 is: 2,060.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.40 : 2,186.81 = 1,371.38 : x
  2. Step 2: Convert to fraction form
    1,455.40/2,186.81 = 1,371.38/x
  3. Step 3: Cross multiply
    1,455.40x = 2,186.81 × 1,371.38
  4. Step 4: Simplify right side
    1,455.40x = 2,998,947.50
  5. Step 5: Solve for x
    x = 2,998,947.50/1,455.40
  6. Step 6: Final answer
    x = 2,060.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.