Home / 7,775.30-10,729.89-4,238.49

Finding the Fourth Proportional to 7,775.30, 10,729.89 and 4,238.49

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Solution

The fourth proportional to 7,775.30, 10,729.89 and 4,238.49 is: 5,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.30 : 10,729.89 = 4,238.49 : x
  2. Step 2: Convert to fraction form
    7,775.30/10,729.89 = 4,238.49/x
  3. Step 3: Cross multiply
    7,775.30x = 10,729.89 × 4,238.49
  4. Step 4: Simplify right side
    7,775.30x = 45,478,531.47
  5. Step 5: Solve for x
    x = 45,478,531.47/7,775.30
  6. Step 6: Final answer
    x = 5,849.11

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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.