Home / 7,775.20-10,729.68-4,238.32

Finding the Fourth Proportional to 7,775.20, 10,729.68 and 4,238.32

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Solution

The fourth proportional to 7,775.20, 10,729.68 and 4,238.32 is: 5,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.20 : 10,729.68 = 4,238.32 : x
  2. Step 2: Convert to fraction form
    7,775.20/10,729.68 = 4,238.32/x
  3. Step 3: Cross multiply
    7,775.20x = 10,729.68 × 4,238.32
  4. Step 4: Simplify right side
    7,775.20x = 45,475,817.34
  5. Step 5: Solve for x
    x = 45,475,817.34/7,775.20
  6. Step 6: Final answer
    x = 5,848.83

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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.