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Finding the Fourth Proportional to 1,871.93, 2,807.90 and 573.23

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Solution

The fourth proportional to 1,871.93, 2,807.90 and 573.23 is: 859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.93 : 2,807.90 = 573.23 : x
  2. Step 2: Convert to fraction form
    1,871.93/2,807.90 = 573.23/x
  3. Step 3: Cross multiply
    1,871.93x = 2,807.90 × 573.23
  4. Step 4: Simplify right side
    1,871.93x = 1,609,578.82
  5. Step 5: Solve for x
    x = 1,609,578.82/1,871.93
  6. Step 6: Final answer
    x = 859.85

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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.