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Finding the Fourth Proportional to 3,078.88, 4,607.04 and 2,912.08

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Solution

The fourth proportional to 3,078.88, 4,607.04 and 2,912.08 is: 4,357.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.88 : 4,607.04 = 2,912.08 : x
  2. Step 2: Convert to fraction form
    3,078.88/4,607.04 = 2,912.08/x
  3. Step 3: Cross multiply
    3,078.88x = 4,607.04 × 2,912.08
  4. Step 4: Simplify right side
    3,078.88x = 13,416,069.04
  5. Step 5: Solve for x
    x = 13,416,069.04/3,078.88
  6. Step 6: Final answer
    x = 4,357.45

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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.