Home / 7,239.49-9,991.65-4,256.05

Finding the Fourth Proportional to 7,239.49, 9,991.65 and 4,256.05

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Solution

The fourth proportional to 7,239.49, 9,991.65 and 4,256.05 is: 5,874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.49 : 9,991.65 = 4,256.05 : x
  2. Step 2: Convert to fraction form
    7,239.49/9,991.65 = 4,256.05/x
  3. Step 3: Cross multiply
    7,239.49x = 9,991.65 × 4,256.05
  4. Step 4: Simplify right side
    7,239.49x = 42,524,961.98
  5. Step 5: Solve for x
    x = 42,524,961.98/7,239.49
  6. Step 6: Final answer
    x = 5,874.03

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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.