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Finding the Fourth Proportional to 2,699.60, 3,725.52 and 1,520.60

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Solution

The fourth proportional to 2,699.60, 3,725.52 and 1,520.60 is: 2,098.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.60 : 3,725.52 = 1,520.60 : x
  2. Step 2: Convert to fraction form
    2,699.60/3,725.52 = 1,520.60/x
  3. Step 3: Cross multiply
    2,699.60x = 3,725.52 × 1,520.60
  4. Step 4: Simplify right side
    2,699.60x = 5,665,025.71
  5. Step 5: Solve for x
    x = 5,665,025.71/2,699.60
  6. Step 6: Final answer
    x = 2,098.47

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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.