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Finding the Fourth Proportional to 2,999.53, 4,139.81 and 1,820.37

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Solution

The fourth proportional to 2,999.53, 4,139.81 and 1,820.37 is: 2,512.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.53 : 4,139.81 = 1,820.37 : x
  2. Step 2: Convert to fraction form
    2,999.53/4,139.81 = 1,820.37/x
  3. Step 3: Cross multiply
    2,999.53x = 4,139.81 × 1,820.37
  4. Step 4: Simplify right side
    2,999.53x = 7,535,999.18
  5. Step 5: Solve for x
    x = 7,535,999.18/2,999.53
  6. Step 6: Final answer
    x = 2,512.39

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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.