Home / 1,815.66-2,724.47-1,405.60

Finding the Fourth Proportional to 1,815.66, 2,724.47 and 1,405.60

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Solution

The fourth proportional to 1,815.66, 2,724.47 and 1,405.60 is: 2,109.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.66 : 2,724.47 = 1,405.60 : x
  2. Step 2: Convert to fraction form
    1,815.66/2,724.47 = 1,405.60/x
  3. Step 3: Cross multiply
    1,815.66x = 2,724.47 × 1,405.60
  4. Step 4: Simplify right side
    1,815.66x = 3,829,511.73
  5. Step 5: Solve for x
    x = 3,829,511.73/1,815.66
  6. Step 6: Final answer
    x = 2,109.16

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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.