Home / 8,541.78-12,814.38-3,611.40

Finding the Fourth Proportional to 8,541.78, 12,814.38 and 3,611.40

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Solution

The fourth proportional to 8,541.78, 12,814.38 and 3,611.40 is: 5,417.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,541.78 : 12,814.38 = 3,611.40 : x
  2. Step 2: Convert to fraction form
    8,541.78/12,814.38 = 3,611.40/x
  3. Step 3: Cross multiply
    8,541.78x = 12,814.38 × 3,611.40
  4. Step 4: Simplify right side
    8,541.78x = 46,277,851.93
  5. Step 5: Solve for x
    x = 46,277,851.93/8,541.78
  6. Step 6: Final answer
    x = 5,417.82

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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.