Home / 5,218.20-7,828.33-1,931.32

Finding the Fourth Proportional to 5,218.20, 7,828.33 and 1,931.32

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Solution

The fourth proportional to 5,218.20, 7,828.33 and 1,931.32 is: 2,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.20 : 7,828.33 = 1,931.32 : x
  2. Step 2: Convert to fraction form
    5,218.20/7,828.33 = 1,931.32/x
  3. Step 3: Cross multiply
    5,218.20x = 7,828.33 × 1,931.32
  4. Step 4: Simplify right side
    5,218.20x = 15,119,040.89
  5. Step 5: Solve for x
    x = 15,119,040.89/5,218.20
  6. Step 6: Final answer
    x = 2,897.37

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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.