Home / 8,130.01-11,219.85-4,942.79

Finding the Fourth Proportional to 8,130.01, 11,219.85 and 4,942.79

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Solution

The fourth proportional to 8,130.01, 11,219.85 and 4,942.79 is: 6,821.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.01 : 11,219.85 = 4,942.79 : x
  2. Step 2: Convert to fraction form
    8,130.01/11,219.85 = 4,942.79/x
  3. Step 3: Cross multiply
    8,130.01x = 11,219.85 × 4,942.79
  4. Step 4: Simplify right side
    8,130.01x = 55,457,293.93
  5. Step 5: Solve for x
    x = 55,457,293.93/8,130.01
  6. Step 6: Final answer
    x = 6,821.30

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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.