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Finding the Fourth Proportional to 1,903.98, 2,627.49 and 1,107.49

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Solution

The fourth proportional to 1,903.98, 2,627.49 and 1,107.49 is: 1,528.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.98 : 2,627.49 = 1,107.49 : x
  2. Step 2: Convert to fraction form
    1,903.98/2,627.49 = 1,107.49/x
  3. Step 3: Cross multiply
    1,903.98x = 2,627.49 × 1,107.49
  4. Step 4: Simplify right side
    1,903.98x = 2,909,921.67
  5. Step 5: Solve for x
    x = 2,909,921.67/1,903.98
  6. Step 6: Final answer
    x = 1,528.34

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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.