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Finding the Fourth Proportional to 2,155.73, 2,973.21 and 1,626.39

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Solution

The fourth proportional to 2,155.73, 2,973.21 and 1,626.39 is: 2,243.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.73 : 2,973.21 = 1,626.39 : x
  2. Step 2: Convert to fraction form
    2,155.73/2,973.21 = 1,626.39/x
  3. Step 3: Cross multiply
    2,155.73x = 2,973.21 × 1,626.39
  4. Step 4: Simplify right side
    2,155.73x = 4,835,599.01
  5. Step 5: Solve for x
    x = 4,835,599.01/2,155.73
  6. Step 6: Final answer
    x = 2,243.14

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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.