Home / 1,419.05-2,134.76-1,345.21

Finding the Fourth Proportional to 1,419.05, 2,134.76 and 1,345.21

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Solution

The fourth proportional to 1,419.05, 2,134.76 and 1,345.21 is: 2,023.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.05 : 2,134.76 = 1,345.21 : x
  2. Step 2: Convert to fraction form
    1,419.05/2,134.76 = 1,345.21/x
  3. Step 3: Cross multiply
    1,419.05x = 2,134.76 × 1,345.21
  4. Step 4: Simplify right side
    1,419.05x = 2,871,688.44
  5. Step 5: Solve for x
    x = 2,871,688.44/1,419.05
  6. Step 6: Final answer
    x = 2,023.67

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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.