Home / 1,720.47-2,371.90-1,182.09

Finding the Fourth Proportional to 1,720.47, 2,371.90 and 1,182.09

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Solution

The fourth proportional to 1,720.47, 2,371.90 and 1,182.09 is: 1,629.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.47 : 2,371.90 = 1,182.09 : x
  2. Step 2: Convert to fraction form
    1,720.47/2,371.90 = 1,182.09/x
  3. Step 3: Cross multiply
    1,720.47x = 2,371.90 × 1,182.09
  4. Step 4: Simplify right side
    1,720.47x = 2,803,796.32
  5. Step 5: Solve for x
    x = 2,803,796.32/1,720.47
  6. Step 6: Final answer
    x = 1,629.67

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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.