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Finding the Fourth Proportional to 4,265.30, 6,385.80 and 4,143.80

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Solution

The fourth proportional to 4,265.30, 6,385.80 and 4,143.80 is: 6,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,265.30 : 6,385.80 = 4,143.80 : x
  2. Step 2: Convert to fraction form
    4,265.30/6,385.80 = 4,143.80/x
  3. Step 3: Cross multiply
    4,265.30x = 6,385.80 × 4,143.80
  4. Step 4: Simplify right side
    4,265.30x = 26,461,478.04
  5. Step 5: Solve for x
    x = 26,461,478.04/4,265.30
  6. Step 6: Final answer
    x = 6,203.90

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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.