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Finding the Fourth Proportional to 1,873.85, 2,810.78 and 575.32

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Solution

The fourth proportional to 1,873.85, 2,810.78 and 575.32 is: 862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,873.85 : 2,810.78 = 575.32 : x
  2. Step 2: Convert to fraction form
    1,873.85/2,810.78 = 575.32/x
  3. Step 3: Cross multiply
    1,873.85x = 2,810.78 × 575.32
  4. Step 4: Simplify right side
    1,873.85x = 1,617,097.95
  5. Step 5: Solve for x
    x = 1,617,097.95/1,873.85
  6. Step 6: Final answer
    x = 862.98

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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.