Home / 8,285.34-12,428.19-3,090.18

Finding the Fourth Proportional to 8,285.34, 12,428.19 and 3,090.18

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Solution

The fourth proportional to 8,285.34, 12,428.19 and 3,090.18 is: 4,635.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.34 : 12,428.19 = 3,090.18 : x
  2. Step 2: Convert to fraction form
    8,285.34/12,428.19 = 3,090.18/x
  3. Step 3: Cross multiply
    8,285.34x = 12,428.19 × 3,090.18
  4. Step 4: Simplify right side
    8,285.34x = 38,405,344.17
  5. Step 5: Solve for x
    x = 38,405,344.17/8,285.34
  6. Step 6: Final answer
    x = 4,635.34

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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.