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Finding the Fourth Proportional to 4,262.30, 6,381.30 and 4,140.80

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Solution

The fourth proportional to 4,262.30, 6,381.30 and 4,140.80 is: 6,199.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,262.30 : 6,381.30 = 4,140.80 : x
  2. Step 2: Convert to fraction form
    4,262.30/6,381.30 = 4,140.80/x
  3. Step 3: Cross multiply
    4,262.30x = 6,381.30 × 4,140.80
  4. Step 4: Simplify right side
    4,262.30x = 26,423,687.04
  5. Step 5: Solve for x
    x = 26,423,687.04/4,262.30
  6. Step 6: Final answer
    x = 6,199.40

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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.