Home / 2,180.90-3,271.36-1,403.30

Finding the Fourth Proportional to 2,180.90, 3,271.36 and 1,403.30

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Solution

The fourth proportional to 2,180.90, 3,271.36 and 1,403.30 is: 2,104.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.90 : 3,271.36 = 1,403.30 : x
  2. Step 2: Convert to fraction form
    2,180.90/3,271.36 = 1,403.30/x
  3. Step 3: Cross multiply
    2,180.90x = 3,271.36 × 1,403.30
  4. Step 4: Simplify right side
    2,180.90x = 4,590,699.49
  5. Step 5: Solve for x
    x = 4,590,699.49/2,180.90
  6. Step 6: Final answer
    x = 2,104.96

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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.