Home / 2,808.40-4,212.60-959.35

Finding the Fourth Proportional to 2,808.40, 4,212.60 and 959.35

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Solution

The fourth proportional to 2,808.40, 4,212.60 and 959.35 is: 1,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.40 : 4,212.60 = 959.35 : x
  2. Step 2: Convert to fraction form
    2,808.40/4,212.60 = 959.35/x
  3. Step 3: Cross multiply
    2,808.40x = 4,212.60 × 959.35
  4. Step 4: Simplify right side
    2,808.40x = 4,041,357.81
  5. Step 5: Solve for x
    x = 4,041,357.81/2,808.40
  6. Step 6: Final answer
    x = 1,439.03

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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.