Home / 1,812.77-2,719.28-580.29

Finding the Fourth Proportional to 1,812.77, 2,719.28 and 580.29

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Solution

The fourth proportional to 1,812.77, 2,719.28 and 580.29 is: 870.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.77 : 2,719.28 = 580.29 : x
  2. Step 2: Convert to fraction form
    1,812.77/2,719.28 = 580.29/x
  3. Step 3: Cross multiply
    1,812.77x = 2,719.28 × 580.29
  4. Step 4: Simplify right side
    1,812.77x = 1,577,972.44
  5. Step 5: Solve for x
    x = 1,577,972.44/1,812.77
  6. Step 6: Final answer
    x = 870.47

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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.