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Finding the Fourth Proportional to 2,899.60, 4,001.08 and 1,720.44

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Solution

The fourth proportional to 2,899.60, 4,001.08 and 1,720.44 is: 2,373.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.60 : 4,001.08 = 1,720.44 : x
  2. Step 2: Convert to fraction form
    2,899.60/4,001.08 = 1,720.44/x
  3. Step 3: Cross multiply
    2,899.60x = 4,001.08 × 1,720.44
  4. Step 4: Simplify right side
    2,899.60x = 6,883,618.08
  5. Step 5: Solve for x
    x = 6,883,618.08/2,899.60
  6. Step 6: Final answer
    x = 2,373.99

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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.