Home / 7,784.08-11,681.38-5,145.90

Finding the Fourth Proportional to 7,784.08, 11,681.38 and 5,145.90

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Solution

The fourth proportional to 7,784.08, 11,681.38 and 5,145.90 is: 7,722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.08 : 11,681.38 = 5,145.90 : x
  2. Step 2: Convert to fraction form
    7,784.08/11,681.38 = 5,145.90/x
  3. Step 3: Cross multiply
    7,784.08x = 11,681.38 × 5,145.90
  4. Step 4: Simplify right side
    7,784.08x = 60,111,213.34
  5. Step 5: Solve for x
    x = 60,111,213.34/7,784.08
  6. Step 6: Final answer
    x = 7,722.33

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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.