Home / 1,812.21-2,718.69-579.93

Finding the Fourth Proportional to 1,812.21, 2,718.69 and 579.93

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Solution

The fourth proportional to 1,812.21, 2,718.69 and 579.93 is: 870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.21 : 2,718.69 = 579.93 : x
  2. Step 2: Convert to fraction form
    1,812.21/2,718.69 = 579.93/x
  3. Step 3: Cross multiply
    1,812.21x = 2,718.69 × 579.93
  4. Step 4: Simplify right side
    1,812.21x = 1,576,649.89
  5. Step 5: Solve for x
    x = 1,576,649.89/1,812.21
  6. Step 6: Final answer
    x = 870.02

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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.