Home / 1,931.77-2,666.28-1,371.66

Finding the Fourth Proportional to 1,931.77, 2,666.28 and 1,371.66

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Solution

The fourth proportional to 1,931.77, 2,666.28 and 1,371.66 is: 1,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.77 : 2,666.28 = 1,371.66 : x
  2. Step 2: Convert to fraction form
    1,931.77/2,666.28 = 1,371.66/x
  3. Step 3: Cross multiply
    1,931.77x = 2,666.28 × 1,371.66
  4. Step 4: Simplify right side
    1,931.77x = 3,657,229.62
  5. Step 5: Solve for x
    x = 3,657,229.62/1,931.77
  6. Step 6: Final answer
    x = 1,893.20

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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.