Home / 5,478.21-8,218.53-1,582.29

Finding the Fourth Proportional to 5,478.21, 8,218.53 and 1,582.29

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Solution

The fourth proportional to 5,478.21, 8,218.53 and 1,582.29 is: 2,373.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.21 : 8,218.53 = 1,582.29 : x
  2. Step 2: Convert to fraction form
    5,478.21/8,218.53 = 1,582.29/x
  3. Step 3: Cross multiply
    5,478.21x = 8,218.53 × 1,582.29
  4. Step 4: Simplify right side
    5,478.21x = 13,004,097.83
  5. Step 5: Solve for x
    x = 13,004,097.83/5,478.21
  6. Step 6: Final answer
    x = 2,373.79

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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.