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Finding the Fourth Proportional to 1,871.51, 2,807.71 and 572.97

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Solution

The fourth proportional to 1,871.51, 2,807.71 and 572.97 is: 859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.51 : 2,807.71 = 572.97 : x
  2. Step 2: Convert to fraction form
    1,871.51/2,807.71 = 572.97/x
  3. Step 3: Cross multiply
    1,871.51x = 2,807.71 × 572.97
  4. Step 4: Simplify right side
    1,871.51x = 1,608,733.60
  5. Step 5: Solve for x
    x = 1,608,733.60/1,871.51
  6. Step 6: Final answer
    x = 859.59

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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.