Home / 1,639.08-2,261.70-1,108.44

Finding the Fourth Proportional to 1,639.08, 2,261.70 and 1,108.44

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Solution

The fourth proportional to 1,639.08, 2,261.70 and 1,108.44 is: 1,529.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.08 : 2,261.70 = 1,108.44 : x
  2. Step 2: Convert to fraction form
    1,639.08/2,261.70 = 1,108.44/x
  3. Step 3: Cross multiply
    1,639.08x = 2,261.70 × 1,108.44
  4. Step 4: Simplify right side
    1,639.08x = 2,506,958.75
  5. Step 5: Solve for x
    x = 2,506,958.75/1,639.08
  6. Step 6: Final answer
    x = 1,529.49

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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.