Home / 2,173.53-2,999.48-1,289.39

Finding the Fourth Proportional to 2,173.53, 2,999.48 and 1,289.39

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Solution

The fourth proportional to 2,173.53, 2,999.48 and 1,289.39 is: 1,779.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.53 : 2,999.48 = 1,289.39 : x
  2. Step 2: Convert to fraction form
    2,173.53/2,999.48 = 1,289.39/x
  3. Step 3: Cross multiply
    2,173.53x = 2,999.48 × 1,289.39
  4. Step 4: Simplify right side
    2,173.53x = 3,867,499.52
  5. Step 5: Solve for x
    x = 3,867,499.52/2,173.53
  6. Step 6: Final answer
    x = 1,779.36

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1.5x scale

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.