Home / 2,999.07-4,138.74-1,820.22

Finding the Fourth Proportional to 2,999.07, 4,138.74 and 1,820.22

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Solution

The fourth proportional to 2,999.07, 4,138.74 and 1,820.22 is: 2,511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.07 : 4,138.74 = 1,820.22 : x
  2. Step 2: Convert to fraction form
    2,999.07/4,138.74 = 1,820.22/x
  3. Step 3: Cross multiply
    2,999.07x = 4,138.74 × 1,820.22
  4. Step 4: Simplify right side
    2,999.07x = 7,533,417.32
  5. Step 5: Solve for x
    x = 7,533,417.32/2,999.07
  6. Step 6: Final answer
    x = 2,511.92

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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.