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Finding the Fourth Proportional to 2,840.48, 3,919.86 and 1,598.48

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Solution

The fourth proportional to 2,840.48, 3,919.86 and 1,598.48 is: 2,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.48 : 3,919.86 = 1,598.48 : x
  2. Step 2: Convert to fraction form
    2,840.48/3,919.86 = 1,598.48/x
  3. Step 3: Cross multiply
    2,840.48x = 3,919.86 × 1,598.48
  4. Step 4: Simplify right side
    2,840.48x = 6,265,817.81
  5. Step 5: Solve for x
    x = 6,265,817.81/2,840.48
  6. Step 6: Final answer
    x = 2,205.90

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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.