Home / 2,999.36-4,139.28-1,820.56

Finding the Fourth Proportional to 2,999.36, 4,139.28 and 1,820.56

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Solution

The fourth proportional to 2,999.36, 4,139.28 and 1,820.56 is: 2,512.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.36 : 4,139.28 = 1,820.56 : x
  2. Step 2: Convert to fraction form
    2,999.36/4,139.28 = 1,820.56/x
  3. Step 3: Cross multiply
    2,999.36x = 4,139.28 × 1,820.56
  4. Step 4: Simplify right side
    2,999.36x = 7,535,807.60
  5. Step 5: Solve for x
    x = 7,535,807.60/2,999.36
  6. Step 6: Final answer
    x = 2,512.47

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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.