Home / 2,899.77-4,000.64-1,905.59

Finding the Fourth Proportional to 2,899.77, 4,000.64 and 1,905.59

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Solution

The fourth proportional to 2,899.77, 4,000.64 and 1,905.59 is: 2,629.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.77 : 4,000.64 = 1,905.59 : x
  2. Step 2: Convert to fraction form
    2,899.77/4,000.64 = 1,905.59/x
  3. Step 3: Cross multiply
    2,899.77x = 4,000.64 × 1,905.59
  4. Step 4: Simplify right side
    2,899.77x = 7,623,550.05
  5. Step 5: Solve for x
    x = 7,623,550.05/2,899.77
  6. Step 6: Final answer
    x = 2,629.02

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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.