Home / 7,729.24-10,665.78-4,745.20

Finding the Fourth Proportional to 7,729.24, 10,665.78 and 4,745.20

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Solution

The fourth proportional to 7,729.24, 10,665.78 and 4,745.20 is: 6,548.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.24 : 10,665.78 = 4,745.20 : x
  2. Step 2: Convert to fraction form
    7,729.24/10,665.78 = 4,745.20/x
  3. Step 3: Cross multiply
    7,729.24x = 10,665.78 × 4,745.20
  4. Step 4: Simplify right side
    7,729.24x = 50,611,259.26
  5. Step 5: Solve for x
    x = 50,611,259.26/7,729.24
  6. Step 6: Final answer
    x = 6,548.03

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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.