Home / 1,509.15-2,083.61-1,230.05

Finding the Fourth Proportional to 1,509.15, 2,083.61 and 1,230.05

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Solution

The fourth proportional to 1,509.15, 2,083.61 and 1,230.05 is: 1,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.15 : 2,083.61 = 1,230.05 : x
  2. Step 2: Convert to fraction form
    1,509.15/2,083.61 = 1,230.05/x
  3. Step 3: Cross multiply
    1,509.15x = 2,083.61 × 1,230.05
  4. Step 4: Simplify right side
    1,509.15x = 2,562,943.54
  5. Step 5: Solve for x
    x = 2,562,943.54/1,509.15
  6. Step 6: Final answer
    x = 1,698.27

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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.