Home / 1,314.91-1,969.21-1,040.11

Finding the Fourth Proportional to 1,314.91, 1,969.21 and 1,040.11

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Solution

The fourth proportional to 1,314.91, 1,969.21 and 1,040.11 is: 1,557.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.91 : 1,969.21 = 1,040.11 : x
  2. Step 2: Convert to fraction form
    1,314.91/1,969.21 = 1,040.11/x
  3. Step 3: Cross multiply
    1,314.91x = 1,969.21 × 1,040.11
  4. Step 4: Simplify right side
    1,314.91x = 2,048,195.01
  5. Step 5: Solve for x
    x = 2,048,195.01/1,314.91
  6. Step 6: Final answer
    x = 1,557.67

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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.