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Finding the Fourth Proportional to 3,604.60, 5,406.90 and 2,875.60

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Solution

The fourth proportional to 3,604.60, 5,406.90 and 2,875.60 is: 4,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,604.60 : 5,406.90 = 2,875.60 : x
  2. Step 2: Convert to fraction form
    3,604.60/5,406.90 = 2,875.60/x
  3. Step 3: Cross multiply
    3,604.60x = 5,406.90 × 2,875.60
  4. Step 4: Simplify right side
    3,604.60x = 15,548,081.64
  5. Step 5: Solve for x
    x = 15,548,081.64/3,604.60
  6. Step 6: Final answer
    x = 4,313.40

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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.