Home / 1,485.10-2,222.97-1,328.57

Finding the Fourth Proportional to 1,485.10, 2,222.97 and 1,328.57

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Solution

The fourth proportional to 1,485.10, 2,222.97 and 1,328.57 is: 1,988.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.10 : 2,222.97 = 1,328.57 : x
  2. Step 2: Convert to fraction form
    1,485.10/2,222.97 = 1,328.57/x
  3. Step 3: Cross multiply
    1,485.10x = 2,222.97 × 1,328.57
  4. Step 4: Simplify right side
    1,485.10x = 2,953,371.25
  5. Step 5: Solve for x
    x = 2,953,371.25/1,485.10
  6. Step 6: Final answer
    x = 1,988.67

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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.