Home / 5,428.60-8,142.96-1,730.80

Finding the Fourth Proportional to 5,428.60, 8,142.96 and 1,730.80

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Solution

The fourth proportional to 5,428.60, 8,142.96 and 1,730.80 is: 2,596.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.60 : 8,142.96 = 1,730.80 : x
  2. Step 2: Convert to fraction form
    5,428.60/8,142.96 = 1,730.80/x
  3. Step 3: Cross multiply
    5,428.60x = 8,142.96 × 1,730.80
  4. Step 4: Simplify right side
    5,428.60x = 14,093,835.17
  5. Step 5: Solve for x
    x = 14,093,835.17/5,428.60
  6. Step 6: Final answer
    x = 2,596.22

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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.