Home / 6,139.20-8,474.40-4,814.40

Finding the Fourth Proportional to 6,139.20, 8,474.40 and 4,814.40

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Solution

The fourth proportional to 6,139.20, 8,474.40 and 4,814.40 is: 6,645.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.20 : 8,474.40 = 4,814.40 : x
  2. Step 2: Convert to fraction form
    6,139.20/8,474.40 = 4,814.40/x
  3. Step 3: Cross multiply
    6,139.20x = 8,474.40 × 4,814.40
  4. Step 4: Simplify right side
    6,139.20x = 40,799,151.36
  5. Step 5: Solve for x
    x = 40,799,151.36/6,139.20
  6. Step 6: Final answer
    x = 6,645.68

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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.