Home / 1,812.79-2,719.59-580.12

Finding the Fourth Proportional to 1,812.79, 2,719.59 and 580.12

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Solution

The fourth proportional to 1,812.79, 2,719.59 and 580.12 is: 870.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.79 : 2,719.59 = 580.12 : x
  2. Step 2: Convert to fraction form
    1,812.79/2,719.59 = 580.12/x
  3. Step 3: Cross multiply
    1,812.79x = 2,719.59 × 580.12
  4. Step 4: Simplify right side
    1,812.79x = 1,577,688.55
  5. Step 5: Solve for x
    x = 1,577,688.55/1,812.79
  6. Step 6: Final answer
    x = 870.31

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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.