Home / 7,827.90-11,742.87-2,561.07

Finding the Fourth Proportional to 7,827.90, 11,742.87 and 2,561.07

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Solution

The fourth proportional to 7,827.90, 11,742.87 and 2,561.07 is: 3,841.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,827.90 : 11,742.87 = 2,561.07 : x
  2. Step 2: Convert to fraction form
    7,827.90/11,742.87 = 2,561.07/x
  3. Step 3: Cross multiply
    7,827.90x = 11,742.87 × 2,561.07
  4. Step 4: Simplify right side
    7,827.90x = 30,074,312.07
  5. Step 5: Solve for x
    x = 30,074,312.07/7,827.90
  6. Step 6: Final answer
    x = 3,841.94

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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.