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Finding the Fourth Proportional to 1,370.86, 1,893.44 and 997.25

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Solution

The fourth proportional to 1,370.86, 1,893.44 and 997.25 is: 1,377.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.86 : 1,893.44 = 997.25 : x
  2. Step 2: Convert to fraction form
    1,370.86/1,893.44 = 997.25/x
  3. Step 3: Cross multiply
    1,370.86x = 1,893.44 × 997.25
  4. Step 4: Simplify right side
    1,370.86x = 1,888,226.07
  5. Step 5: Solve for x
    x = 1,888,226.07/1,370.86
  6. Step 6: Final answer
    x = 1,377.41

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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.