Home / 2,986.64-4,120.40-2,202.56

Finding the Fourth Proportional to 2,986.64, 4,120.40 and 2,202.56

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Solution

The fourth proportional to 2,986.64, 4,120.40 and 2,202.56 is: 3,038.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.64 : 4,120.40 = 2,202.56 : x
  2. Step 2: Convert to fraction form
    2,986.64/4,120.40 = 2,202.56/x
  3. Step 3: Cross multiply
    2,986.64x = 4,120.40 × 2,202.56
  4. Step 4: Simplify right side
    2,986.64x = 9,075,428.22
  5. Step 5: Solve for x
    x = 9,075,428.22/2,986.64
  6. Step 6: Final answer
    x = 3,038.67

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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.