Home / 2,485.64-3,721.37-1,929.77

Finding the Fourth Proportional to 2,485.64, 3,721.37 and 1,929.77

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Solution

The fourth proportional to 2,485.64, 3,721.37 and 1,929.77 is: 2,889.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.64 : 3,721.37 = 1,929.77 : x
  2. Step 2: Convert to fraction form
    2,485.64/3,721.37 = 1,929.77/x
  3. Step 3: Cross multiply
    2,485.64x = 3,721.37 × 1,929.77
  4. Step 4: Simplify right side
    2,485.64x = 7,181,387.84
  5. Step 5: Solve for x
    x = 7,181,387.84/2,485.64
  6. Step 6: Final answer
    x = 2,889.16

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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.