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Finding the Fourth Proportional to 2,075.68, 3,112.98 and 614.44

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Solution

The fourth proportional to 2,075.68, 3,112.98 and 614.44 is: 921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.68 : 3,112.98 = 614.44 : x
  2. Step 2: Convert to fraction form
    2,075.68/3,112.98 = 614.44/x
  3. Step 3: Cross multiply
    2,075.68x = 3,112.98 × 614.44
  4. Step 4: Simplify right side
    2,075.68x = 1,912,739.43
  5. Step 5: Solve for x
    x = 1,912,739.43/2,075.68
  6. Step 6: Final answer
    x = 921.50

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1.5x scale

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.