Home / 6,126.30-8,455.50-3,890.79

Finding the Fourth Proportional to 6,126.30, 8,455.50 and 3,890.79

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Solution

The fourth proportional to 6,126.30, 8,455.50 and 3,890.79 is: 5,370.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,126.30 : 8,455.50 = 3,890.79 : x
  2. Step 2: Convert to fraction form
    6,126.30/8,455.50 = 3,890.79/x
  3. Step 3: Cross multiply
    6,126.30x = 8,455.50 × 3,890.79
  4. Step 4: Simplify right side
    6,126.30x = 32,898,574.85
  5. Step 5: Solve for x
    x = 32,898,574.85/6,126.30
  6. Step 6: Final answer
    x = 5,370.06

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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.