Home / 5,681.45-8,523.52-1,785.86

Finding the Fourth Proportional to 5,681.45, 8,523.52 and 1,785.86

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Solution

The fourth proportional to 5,681.45, 8,523.52 and 1,785.86 is: 2,679.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.45 : 8,523.52 = 1,785.86 : x
  2. Step 2: Convert to fraction form
    5,681.45/8,523.52 = 1,785.86/x
  3. Step 3: Cross multiply
    5,681.45x = 8,523.52 × 1,785.86
  4. Step 4: Simplify right side
    5,681.45x = 15,221,787.65
  5. Step 5: Solve for x
    x = 15,221,787.65/5,681.45
  6. Step 6: Final answer
    x = 2,679.21

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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.