Home / 3,975.96-5,483.70-2,780.58

Finding the Fourth Proportional to 3,975.96, 5,483.70 and 2,780.58

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Solution

The fourth proportional to 3,975.96, 5,483.70 and 2,780.58 is: 3,835.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.96 : 5,483.70 = 2,780.58 : x
  2. Step 2: Convert to fraction form
    3,975.96/5,483.70 = 2,780.58/x
  3. Step 3: Cross multiply
    3,975.96x = 5,483.70 × 2,780.58
  4. Step 4: Simplify right side
    3,975.96x = 15,247,866.55
  5. Step 5: Solve for x
    x = 15,247,866.55/3,975.96
  6. Step 6: Final answer
    x = 3,835.02

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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.