Home / 5,815.74-8,720.37-2,890.02

Finding the Fourth Proportional to 5,815.74, 8,720.37 and 2,890.02

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Solution

The fourth proportional to 5,815.74, 8,720.37 and 2,890.02 is: 4,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.74 : 8,720.37 = 2,890.02 : x
  2. Step 2: Convert to fraction form
    5,815.74/8,720.37 = 2,890.02/x
  3. Step 3: Cross multiply
    5,815.74x = 8,720.37 × 2,890.02
  4. Step 4: Simplify right side
    5,815.74x = 25,202,043.71
  5. Step 5: Solve for x
    x = 25,202,043.71/5,815.74
  6. Step 6: Final answer
    x = 4,333.42

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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.