Home / 3,778.28-5,215.88-2,898.01

Finding the Fourth Proportional to 3,778.28, 5,215.88 and 2,898.01

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Solution

The fourth proportional to 3,778.28, 5,215.88 and 2,898.01 is: 4,000.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.28 : 5,215.88 = 2,898.01 : x
  2. Step 2: Convert to fraction form
    3,778.28/5,215.88 = 2,898.01/x
  3. Step 3: Cross multiply
    3,778.28x = 5,215.88 × 2,898.01
  4. Step 4: Simplify right side
    3,778.28x = 15,115,631.83
  5. Step 5: Solve for x
    x = 15,115,631.83/3,778.28
  6. Step 6: Final answer
    x = 4,000.67

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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.