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Finding the Fourth Proportional to 3,080.30, 4,302.70 and 3,080.30

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Solution

The fourth proportional to 3,080.30, 4,302.70 and 3,080.30 is: 4,302.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.30 : 4,302.70 = 3,080.30 : x
  2. Step 2: Convert to fraction form
    3,080.30/4,302.70 = 3,080.30/x
  3. Step 3: Cross multiply
    3,080.30x = 4,302.70 × 3,080.30
  4. Step 4: Simplify right side
    3,080.30x = 13,253,606.81
  5. Step 5: Solve for x
    x = 13,253,606.81/3,080.30
  6. Step 6: Final answer
    x = 4,302.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.