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Finding the Fourth Proportional to 3,477.84, 5,219.22 and 1,397.70

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Solution

The fourth proportional to 3,477.84, 5,219.22 and 1,397.70 is: 2,097.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,477.84 : 5,219.22 = 1,397.70 : x
  2. Step 2: Convert to fraction form
    3,477.84/5,219.22 = 1,397.70/x
  3. Step 3: Cross multiply
    3,477.84x = 5,219.22 × 1,397.70
  4. Step 4: Simplify right side
    3,477.84x = 7,294,903.79
  5. Step 5: Solve for x
    x = 7,294,903.79/3,477.84
  6. Step 6: Final answer
    x = 2,097.54

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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.