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Finding the Fourth Proportional to 6,285.90, 9,428.82 and 1,668.90

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Solution

The fourth proportional to 6,285.90, 9,428.82 and 1,668.90 is: 2,503.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,285.90 : 9,428.82 = 1,668.90 : x
  2. Step 2: Convert to fraction form
    6,285.90/9,428.82 = 1,668.90/x
  3. Step 3: Cross multiply
    6,285.90x = 9,428.82 × 1,668.90
  4. Step 4: Simplify right side
    6,285.90x = 15,735,757.70
  5. Step 5: Solve for x
    x = 15,735,757.70/6,285.90
  6. Step 6: Final answer
    x = 2,503.34

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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.