Home / 1,783.64-2,458.10-1,285.44

Finding the Fourth Proportional to 1,783.64, 2,458.10 and 1,285.44

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Solution

The fourth proportional to 1,783.64, 2,458.10 and 1,285.44 is: 1,771.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.64 : 2,458.10 = 1,285.44 : x
  2. Step 2: Convert to fraction form
    1,783.64/2,458.10 = 1,285.44/x
  3. Step 3: Cross multiply
    1,783.64x = 2,458.10 × 1,285.44
  4. Step 4: Simplify right side
    1,783.64x = 3,159,740.06
  5. Step 5: Solve for x
    x = 3,159,740.06/1,783.64
  6. Step 6: Final answer
    x = 1,771.51

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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.