Home / 1,215.43-1,823.60-1,079.51

Finding the Fourth Proportional to 1,215.43, 1,823.60 and 1,079.51

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Solution

The fourth proportional to 1,215.43, 1,823.60 and 1,079.51 is: 1,619.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.43 : 1,823.60 = 1,079.51 : x
  2. Step 2: Convert to fraction form
    1,215.43/1,823.60 = 1,079.51/x
  3. Step 3: Cross multiply
    1,215.43x = 1,823.60 × 1,079.51
  4. Step 4: Simplify right side
    1,215.43x = 1,968,588.02
  5. Step 5: Solve for x
    x = 1,968,588.02/1,215.43
  6. Step 6: Final answer
    x = 1,619.67

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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.