Home / 5,285.21-7,927.22-1,389.92

Finding the Fourth Proportional to 5,285.21, 7,927.22 and 1,389.92

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Solution

The fourth proportional to 5,285.21, 7,927.22 and 1,389.92 is: 2,084.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.21 : 7,927.22 = 1,389.92 : x
  2. Step 2: Convert to fraction form
    5,285.21/7,927.22 = 1,389.92/x
  3. Step 3: Cross multiply
    5,285.21x = 7,927.22 × 1,389.92
  4. Step 4: Simplify right side
    5,285.21x = 11,018,194.67
  5. Step 5: Solve for x
    x = 11,018,194.67/5,285.21
  6. Step 6: Final answer
    x = 2,084.72

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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.