Home / 1,812.81-2,719.69-580.24

Finding the Fourth Proportional to 1,812.81, 2,719.69 and 580.24

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Solution

The fourth proportional to 1,812.81, 2,719.69 and 580.24 is: 870.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.81 : 2,719.69 = 580.24 : x
  2. Step 2: Convert to fraction form
    1,812.81/2,719.69 = 580.24/x
  3. Step 3: Cross multiply
    1,812.81x = 2,719.69 × 580.24
  4. Step 4: Simplify right side
    1,812.81x = 1,578,072.93
  5. Step 5: Solve for x
    x = 1,578,072.93/1,812.81
  6. Step 6: Final answer
    x = 870.51

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1.5x scale

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.