Home / 4,291.72-6,438.13-1,330.36

Finding the Fourth Proportional to 4,291.72, 6,438.13 and 1,330.36

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Solution

The fourth proportional to 4,291.72, 6,438.13 and 1,330.36 is: 1,995.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,291.72 : 6,438.13 = 1,330.36 : x
  2. Step 2: Convert to fraction form
    4,291.72/6,438.13 = 1,330.36/x
  3. Step 3: Cross multiply
    4,291.72x = 6,438.13 × 1,330.36
  4. Step 4: Simplify right side
    4,291.72x = 8,565,011.21
  5. Step 5: Solve for x
    x = 8,565,011.21/4,291.72
  6. Step 6: Final answer
    x = 1,995.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.