Home / 3,705.15-5,558.78-1,240.12

Finding the Fourth Proportional to 3,705.15, 5,558.78 and 1,240.12

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Solution

The fourth proportional to 3,705.15, 5,558.78 and 1,240.12 is: 1,860.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.15 : 5,558.78 = 1,240.12 : x
  2. Step 2: Convert to fraction form
    3,705.15/5,558.78 = 1,240.12/x
  3. Step 3: Cross multiply
    3,705.15x = 5,558.78 × 1,240.12
  4. Step 4: Simplify right side
    3,705.15x = 6,893,554.25
  5. Step 5: Solve for x
    x = 6,893,554.25/3,705.15
  6. Step 6: Final answer
    x = 1,860.53

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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.