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Finding the Fourth Proportional to 2,709.36, 3,738.60 and 1,530.36

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Solution

The fourth proportional to 2,709.36, 3,738.60 and 1,530.36 is: 2,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.36 : 3,738.60 = 1,530.36 : x
  2. Step 2: Convert to fraction form
    2,709.36/3,738.60 = 1,530.36/x
  3. Step 3: Cross multiply
    2,709.36x = 3,738.60 × 1,530.36
  4. Step 4: Simplify right side
    2,709.36x = 5,721,403.90
  5. Step 5: Solve for x
    x = 5,721,403.90/2,709.36
  6. Step 6: Final answer
    x = 2,111.72

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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.