Home / 6,105.82-8,430.30-5,392.20

Finding the Fourth Proportional to 6,105.82, 8,430.30 and 5,392.20

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Solution

The fourth proportional to 6,105.82, 8,430.30 and 5,392.20 is: 7,445.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,105.82 : 8,430.30 = 5,392.20 : x
  2. Step 2: Convert to fraction form
    6,105.82/8,430.30 = 5,392.20/x
  3. Step 3: Cross multiply
    6,105.82x = 8,430.30 × 5,392.20
  4. Step 4: Simplify right side
    6,105.82x = 45,457,863.66
  5. Step 5: Solve for x
    x = 45,457,863.66/6,105.82
  6. Step 6: Final answer
    x = 7,445.01

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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.