Home / 5,420.79-8,131.46-1,723.32

Finding the Fourth Proportional to 5,420.79, 8,131.46 and 1,723.32

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Solution

The fourth proportional to 5,420.79, 8,131.46 and 1,723.32 is: 2,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.79 : 8,131.46 = 1,723.32 : x
  2. Step 2: Convert to fraction form
    5,420.79/8,131.46 = 1,723.32/x
  3. Step 3: Cross multiply
    5,420.79x = 8,131.46 × 1,723.32
  4. Step 4: Simplify right side
    5,420.79x = 14,013,099.03
  5. Step 5: Solve for x
    x = 14,013,099.03/5,420.79
  6. Step 6: Final answer
    x = 2,585.07

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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.