Home / 7,775.12-10,729.68-4,238.34

Finding the Fourth Proportional to 7,775.12, 10,729.68 and 4,238.34

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Solution

The fourth proportional to 7,775.12, 10,729.68 and 4,238.34 is: 5,848.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.12 : 10,729.68 = 4,238.34 : x
  2. Step 2: Convert to fraction form
    7,775.12/10,729.68 = 4,238.34/x
  3. Step 3: Cross multiply
    7,775.12x = 10,729.68 × 4,238.34
  4. Step 4: Simplify right side
    7,775.12x = 45,476,031.93
  5. Step 5: Solve for x
    x = 45,476,031.93/7,775.12
  6. Step 6: Final answer
    x = 5,848.92

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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.