Home / 5,128.06-7,058.64-3,709.45

Finding the Fourth Proportional to 5,128.06, 7,058.64 and 3,709.45

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Solution

The fourth proportional to 5,128.06, 7,058.64 and 3,709.45 is: 5,105.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.06 : 7,058.64 = 3,709.45 : x
  2. Step 2: Convert to fraction form
    5,128.06/7,058.64 = 3,709.45/x
  3. Step 3: Cross multiply
    5,128.06x = 7,058.64 × 3,709.45
  4. Step 4: Simplify right side
    5,128.06x = 26,183,672.15
  5. Step 5: Solve for x
    x = 26,183,672.15/5,128.06
  6. Step 6: Final answer
    x = 5,105.96

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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.