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Finding the Fourth Proportional to 1,871.83, 2,807.88 and 573.13

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Solution

The fourth proportional to 1,871.83, 2,807.88 and 573.13 is: 859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.83 : 2,807.88 = 573.13 : x
  2. Step 2: Convert to fraction form
    1,871.83/2,807.88 = 573.13/x
  3. Step 3: Cross multiply
    1,871.83x = 2,807.88 × 573.13
  4. Step 4: Simplify right side
    1,871.83x = 1,609,280.26
  5. Step 5: Solve for x
    x = 1,609,280.26/1,871.83
  6. Step 6: Final answer
    x = 859.74

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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.