Home / 1,371.58-1,890.87-1,160.92

Finding the Fourth Proportional to 1,371.58, 1,890.87 and 1,160.92

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Solution

The fourth proportional to 1,371.58, 1,890.87 and 1,160.92 is: 1,600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.58 : 1,890.87 = 1,160.92 : x
  2. Step 2: Convert to fraction form
    1,371.58/1,890.87 = 1,160.92/x
  3. Step 3: Cross multiply
    1,371.58x = 1,890.87 × 1,160.92
  4. Step 4: Simplify right side
    1,371.58x = 2,195,148.80
  5. Step 5: Solve for x
    x = 2,195,148.80/1,371.58
  6. Step 6: Final answer
    x = 1,600.45

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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.