Home / 8,287.51-12,428.30-2,739.83

Finding the Fourth Proportional to 8,287.51, 12,428.30 and 2,739.83

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Solution

The fourth proportional to 8,287.51, 12,428.30 and 2,739.83 is: 4,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,287.51 : 12,428.30 = 2,739.83 : x
  2. Step 2: Convert to fraction form
    8,287.51/12,428.30 = 2,739.83/x
  3. Step 3: Cross multiply
    8,287.51x = 12,428.30 × 2,739.83
  4. Step 4: Simplify right side
    8,287.51x = 34,051,429.19
  5. Step 5: Solve for x
    x = 34,051,429.19/8,287.51
  6. Step 6: Final answer
    x = 4,108.76

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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.