Home / 2,808.36-4,207.86-1,709.40

Finding the Fourth Proportional to 2,808.36, 4,207.86 and 1,709.40

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Solution

The fourth proportional to 2,808.36, 4,207.86 and 1,709.40 is: 2,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.36 : 4,207.86 = 1,709.40 : x
  2. Step 2: Convert to fraction form
    2,808.36/4,207.86 = 1,709.40/x
  3. Step 3: Cross multiply
    2,808.36x = 4,207.86 × 1,709.40
  4. Step 4: Simplify right side
    2,808.36x = 7,192,915.88
  5. Step 5: Solve for x
    x = 7,192,915.88/2,808.36
  6. Step 6: Final answer
    x = 2,561.25

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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.