Home / 3,759.12-5,641.56-1,678.32

Finding the Fourth Proportional to 3,759.12, 5,641.56 and 1,678.32

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Solution

The fourth proportional to 3,759.12, 5,641.56 and 1,678.32 is: 2,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.12 : 5,641.56 = 1,678.32 : x
  2. Step 2: Convert to fraction form
    3,759.12/5,641.56 = 1,678.32/x
  3. Step 3: Cross multiply
    3,759.12x = 5,641.56 × 1,678.32
  4. Step 4: Simplify right side
    3,759.12x = 9,468,342.98
  5. Step 5: Solve for x
    x = 9,468,342.98/3,759.12
  6. Step 6: Final answer
    x = 2,518.77

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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.