Home / 2,197.81-3,291.65-1,271.07

Finding the Fourth Proportional to 2,197.81, 3,291.65 and 1,271.07

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Solution

The fourth proportional to 2,197.81, 3,291.65 and 1,271.07 is: 1,903.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.81 : 3,291.65 = 1,271.07 : x
  2. Step 2: Convert to fraction form
    2,197.81/3,291.65 = 1,271.07/x
  3. Step 3: Cross multiply
    2,197.81x = 3,291.65 × 1,271.07
  4. Step 4: Simplify right side
    2,197.81x = 4,183,915.98
  5. Step 5: Solve for x
    x = 4,183,915.98/2,197.81
  6. Step 6: Final answer
    x = 1,903.67

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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.