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Finding the Fourth Proportional to 3,410.55, 4,705.02 and 2,912.40

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Solution

The fourth proportional to 3,410.55, 4,705.02 and 2,912.40 is: 4,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.55 : 4,705.02 = 2,912.40 : x
  2. Step 2: Convert to fraction form
    3,410.55/4,705.02 = 2,912.40/x
  3. Step 3: Cross multiply
    3,410.55x = 4,705.02 × 2,912.40
  4. Step 4: Simplify right side
    3,410.55x = 13,702,900.25
  5. Step 5: Solve for x
    x = 13,702,900.25/3,410.55
  6. Step 6: Final answer
    x = 4,017.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.