Home / 7,381.78-10,187.31-4,238.44

Finding the Fourth Proportional to 7,381.78, 10,187.31 and 4,238.44

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Solution

The fourth proportional to 7,381.78, 10,187.31 and 4,238.44 is: 5,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.78 : 10,187.31 = 4,238.44 : x
  2. Step 2: Convert to fraction form
    7,381.78/10,187.31 = 4,238.44/x
  3. Step 3: Cross multiply
    7,381.78x = 10,187.31 × 4,238.44
  4. Step 4: Simplify right side
    7,381.78x = 43,178,302.20
  5. Step 5: Solve for x
    x = 43,178,302.20/7,381.78
  6. Step 6: Final answer
    x = 5,849.31

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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.