Home / 2,812.96-4,216.64-1,581.40

Finding the Fourth Proportional to 2,812.96, 4,216.64 and 1,581.40

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Solution

The fourth proportional to 2,812.96, 4,216.64 and 1,581.40 is: 2,370.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.96 : 4,216.64 = 1,581.40 : x
  2. Step 2: Convert to fraction form
    2,812.96/4,216.64 = 1,581.40/x
  3. Step 3: Cross multiply
    2,812.96x = 4,216.64 × 1,581.40
  4. Step 4: Simplify right side
    2,812.96x = 6,668,173.41
  5. Step 5: Solve for x
    x = 6,668,173.41/2,812.96
  6. Step 6: Final answer
    x = 2,370.52

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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.