Home / 2,172.56-2,999.03-1,543.19

Finding the Fourth Proportional to 2,172.56, 2,999.03 and 1,543.19

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Solution

The fourth proportional to 2,172.56, 2,999.03 and 1,543.19 is: 2,130.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.56 : 2,999.03 = 1,543.19 : x
  2. Step 2: Convert to fraction form
    2,172.56/2,999.03 = 1,543.19/x
  3. Step 3: Cross multiply
    2,172.56x = 2,999.03 × 1,543.19
  4. Step 4: Simplify right side
    2,172.56x = 4,628,050.39
  5. Step 5: Solve for x
    x = 4,628,050.39/2,172.56
  6. Step 6: Final answer
    x = 2,130.23

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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.