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Finding the Fourth Proportional to 2,486.10, 3,485.40 and 2,486.10

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Solution

The fourth proportional to 2,486.10, 3,485.40 and 2,486.10 is: 3,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.10 : 3,485.40 = 2,486.10 : x
  2. Step 2: Convert to fraction form
    2,486.10/3,485.40 = 2,486.10/x
  3. Step 3: Cross multiply
    2,486.10x = 3,485.40 × 2,486.10
  4. Step 4: Simplify right side
    2,486.10x = 8,665,052.94
  5. Step 5: Solve for x
    x = 8,665,052.94/2,486.10
  6. Step 6: Final answer
    x = 3,485.40

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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.