Home / 2,697.85-4,043.34-1,215.48

Finding the Fourth Proportional to 2,697.85, 4,043.34 and 1,215.48

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Solution

The fourth proportional to 2,697.85, 4,043.34 and 1,215.48 is: 1,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,697.85 : 4,043.34 = 1,215.48 : x
  2. Step 2: Convert to fraction form
    2,697.85/4,043.34 = 1,215.48/x
  3. Step 3: Cross multiply
    2,697.85x = 4,043.34 × 1,215.48
  4. Step 4: Simplify right side
    2,697.85x = 4,914,598.90
  5. Step 5: Solve for x
    x = 4,914,598.90/2,697.85
  6. Step 6: Final answer
    x = 1,821.67

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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.