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Finding the Fourth Proportional to 2,858.70, 4,290.23 and 1,473.21

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Solution

The fourth proportional to 2,858.70, 4,290.23 and 1,473.21 is: 2,210.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.70 : 4,290.23 = 1,473.21 : x
  2. Step 2: Convert to fraction form
    2,858.70/4,290.23 = 1,473.21/x
  3. Step 3: Cross multiply
    2,858.70x = 4,290.23 × 1,473.21
  4. Step 4: Simplify right side
    2,858.70x = 6,320,409.74
  5. Step 5: Solve for x
    x = 6,320,409.74/2,858.70
  6. Step 6: Final answer
    x = 2,210.94

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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.