Home / 4,912.40-6,779.76-2,816.12

Finding the Fourth Proportional to 4,912.40, 6,779.76 and 2,816.12

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Solution

The fourth proportional to 4,912.40, 6,779.76 and 2,816.12 is: 3,886.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.40 : 6,779.76 = 2,816.12 : x
  2. Step 2: Convert to fraction form
    4,912.40/6,779.76 = 2,816.12/x
  3. Step 3: Cross multiply
    4,912.40x = 6,779.76 × 2,816.12
  4. Step 4: Simplify right side
    4,912.40x = 19,092,617.73
  5. Step 5: Solve for x
    x = 19,092,617.73/4,912.40
  6. Step 6: Final answer
    x = 3,886.62

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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.