Home / 5,417.91-8,125.41-1,521.39

Finding the Fourth Proportional to 5,417.91, 8,125.41 and 1,521.39

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Solution

The fourth proportional to 5,417.91, 8,125.41 and 1,521.39 is: 2,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.91 : 8,125.41 = 1,521.39 : x
  2. Step 2: Convert to fraction form
    5,417.91/8,125.41 = 1,521.39/x
  3. Step 3: Cross multiply
    5,417.91x = 8,125.41 × 1,521.39
  4. Step 4: Simplify right side
    5,417.91x = 12,361,917.52
  5. Step 5: Solve for x
    x = 12,361,917.52/5,417.91
  6. Step 6: Final answer
    x = 2,281.68

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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.