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Finding the Fourth Proportional to 3,509.98, 4,843.75 and 1,938.07

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Solution

The fourth proportional to 3,509.98, 4,843.75 and 1,938.07 is: 2,674.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.98 : 4,843.75 = 1,938.07 : x
  2. Step 2: Convert to fraction form
    3,509.98/4,843.75 = 1,938.07/x
  3. Step 3: Cross multiply
    3,509.98x = 4,843.75 × 1,938.07
  4. Step 4: Simplify right side
    3,509.98x = 9,387,526.56
  5. Step 5: Solve for x
    x = 9,387,526.56/3,509.98
  6. Step 6: Final answer
    x = 2,674.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.