Home / 1,783.35-2,688.39-1,664.42

Finding the Fourth Proportional to 1,783.35, 2,688.39 and 1,664.42

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Solution

The fourth proportional to 1,783.35, 2,688.39 and 1,664.42 is: 2,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.35 : 2,688.39 = 1,664.42 : x
  2. Step 2: Convert to fraction form
    1,783.35/2,688.39 = 1,664.42/x
  3. Step 3: Cross multiply
    1,783.35x = 2,688.39 × 1,664.42
  4. Step 4: Simplify right side
    1,783.35x = 4,474,596.64
  5. Step 5: Solve for x
    x = 4,474,596.64/1,783.35
  6. Step 6: Final answer
    x = 2,509.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.