Home / 2,120.80-3,176.64-1,756.30

Finding the Fourth Proportional to 2,120.80, 3,176.64 and 1,756.30

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Solution

The fourth proportional to 2,120.80, 3,176.64 and 1,756.30 is: 2,630.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.80 : 3,176.64 = 1,756.30 : x
  2. Step 2: Convert to fraction form
    2,120.80/3,176.64 = 1,756.30/x
  3. Step 3: Cross multiply
    2,120.80x = 3,176.64 × 1,756.30
  4. Step 4: Simplify right side
    2,120.80x = 5,579,132.83
  5. Step 5: Solve for x
    x = 5,579,132.83/2,120.80
  6. Step 6: Final answer
    x = 2,630.67

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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.