Home / 5,812.95-8,720.46-2,120.34

Finding the Fourth Proportional to 5,812.95, 8,720.46 and 2,120.34

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Solution

The fourth proportional to 5,812.95, 8,720.46 and 2,120.34 is: 3,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812.95 : 8,720.46 = 2,120.34 : x
  2. Step 2: Convert to fraction form
    5,812.95/8,720.46 = 2,120.34/x
  3. Step 3: Cross multiply
    5,812.95x = 8,720.46 × 2,120.34
  4. Step 4: Simplify right side
    5,812.95x = 18,490,340.16
  5. Step 5: Solve for x
    x = 18,490,340.16/5,812.95
  6. Step 6: Final answer
    x = 3,180.89

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1.5x scale

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.