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Finding the Fourth Proportional to 2,798.48, 4,197.60 and 718.49

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Solution

The fourth proportional to 2,798.48, 4,197.60 and 718.49 is: 1,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.48 : 4,197.60 = 718.49 : x
  2. Step 2: Convert to fraction form
    2,798.48/4,197.60 = 718.49/x
  3. Step 3: Cross multiply
    2,798.48x = 4,197.60 × 718.49
  4. Step 4: Simplify right side
    2,798.48x = 3,015,912.64
  5. Step 5: Solve for x
    x = 3,015,912.64/2,798.48
  6. Step 6: Final answer
    x = 1,077.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.