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Finding the Fourth Proportional to 2,075.62, 3,113.10 and 574.28

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Solution

The fourth proportional to 2,075.62, 3,113.10 and 574.28 is: 861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.62 : 3,113.10 = 574.28 : x
  2. Step 2: Convert to fraction form
    2,075.62/3,113.10 = 574.28/x
  3. Step 3: Cross multiply
    2,075.62x = 3,113.10 × 574.28
  4. Step 4: Simplify right side
    2,075.62x = 1,787,798.85
  5. Step 5: Solve for x
    x = 1,787,798.85/2,075.62
  6. Step 6: Final answer
    x = 861.33

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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.