Home / 5,411.40-8,112.30-4,828.20

Finding the Fourth Proportional to 5,411.40, 8,112.30 and 4,828.20

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Solution

The fourth proportional to 5,411.40, 8,112.30 and 4,828.20 is: 7,238.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.40 : 8,112.30 = 4,828.20 : x
  2. Step 2: Convert to fraction form
    5,411.40/8,112.30 = 4,828.20/x
  3. Step 3: Cross multiply
    5,411.40x = 8,112.30 × 4,828.20
  4. Step 4: Simplify right side
    5,411.40x = 39,167,806.86
  5. Step 5: Solve for x
    x = 39,167,806.86/5,411.40
  6. Step 6: Final answer
    x = 7,238.02

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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.