Home / 2,878.30-4,313.40-2,011.60

Finding the Fourth Proportional to 2,878.30, 4,313.40 and 2,011.60

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Solution

The fourth proportional to 2,878.30, 4,313.40 and 2,011.60 is: 3,014.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.30 : 4,313.40 = 2,011.60 : x
  2. Step 2: Convert to fraction form
    2,878.30/4,313.40 = 2,011.60/x
  3. Step 3: Cross multiply
    2,878.30x = 4,313.40 × 2,011.60
  4. Step 4: Simplify right side
    2,878.30x = 8,676,835.44
  5. Step 5: Solve for x
    x = 8,676,835.44/2,878.30
  6. Step 6: Final answer
    x = 3,014.57

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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.