Home / 5,811.52-8,720.99-2,113.40

Finding the Fourth Proportional to 5,811.52, 8,720.99 and 2,113.40

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Solution

The fourth proportional to 5,811.52, 8,720.99 and 2,113.40 is: 3,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.52 : 8,720.99 = 2,113.40 : x
  2. Step 2: Convert to fraction form
    5,811.52/8,720.99 = 2,113.40/x
  3. Step 3: Cross multiply
    5,811.52x = 8,720.99 × 2,113.40
  4. Step 4: Simplify right side
    5,811.52x = 18,430,916.32
  5. Step 5: Solve for x
    x = 18,430,916.32/5,811.52
  6. Step 6: Final answer
    x = 3,171.45

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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.