Home / 1,613.16-2,227.23-1,438.20

Finding the Fourth Proportional to 1,613.16, 2,227.23 and 1,438.20

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Solution

The fourth proportional to 1,613.16, 2,227.23 and 1,438.20 is: 1,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.16 : 2,227.23 = 1,438.20 : x
  2. Step 2: Convert to fraction form
    1,613.16/2,227.23 = 1,438.20/x
  3. Step 3: Cross multiply
    1,613.16x = 2,227.23 × 1,438.20
  4. Step 4: Simplify right side
    1,613.16x = 3,203,202.19
  5. Step 5: Solve for x
    x = 3,203,202.19/1,613.16
  6. Step 6: Final answer
    x = 1,985.67

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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.