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Finding the Fourth Proportional to 2,093.48, 3,139.07 and 687.24

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Solution

The fourth proportional to 2,093.48, 3,139.07 and 687.24 is: 1,030.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,093.48 : 3,139.07 = 687.24 : x
  2. Step 2: Convert to fraction form
    2,093.48/3,139.07 = 687.24/x
  3. Step 3: Cross multiply
    2,093.48x = 3,139.07 × 687.24
  4. Step 4: Simplify right side
    2,093.48x = 2,157,291.03
  5. Step 5: Solve for x
    x = 2,157,291.03/2,093.48
  6. Step 6: Final answer
    x = 1,030.48

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1.5x scale

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.