Home / 6,912.31-10,368.48-4,128.99

Finding the Fourth Proportional to 6,912.31, 10,368.48 and 4,128.99

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Solution

The fourth proportional to 6,912.31, 10,368.48 and 4,128.99 is: 6,193.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.31 : 10,368.48 = 4,128.99 : x
  2. Step 2: Convert to fraction form
    6,912.31/10,368.48 = 4,128.99/x
  3. Step 3: Cross multiply
    6,912.31x = 10,368.48 × 4,128.99
  4. Step 4: Simplify right side
    6,912.31x = 42,811,350.24
  5. Step 5: Solve for x
    x = 42,811,350.24/6,912.31
  6. Step 6: Final answer
    x = 6,193.49

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Similar ratio
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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.