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Finding the Fourth Proportional to 2,810.76, 4,216.29 and 1,079.25

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Solution

The fourth proportional to 2,810.76, 4,216.29 and 1,079.25 is: 1,618.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.76 : 4,216.29 = 1,079.25 : x
  2. Step 2: Convert to fraction form
    2,810.76/4,216.29 = 1,079.25/x
  3. Step 3: Cross multiply
    2,810.76x = 4,216.29 × 1,079.25
  4. Step 4: Simplify right side
    2,810.76x = 4,550,430.98
  5. Step 5: Solve for x
    x = 4,550,430.98/2,810.76
  6. Step 6: Final answer
    x = 1,618.93

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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.