Home / 4,745.51-7,120.10-1,971.47

Finding the Fourth Proportional to 4,745.51, 7,120.10 and 1,971.47

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Solution

The fourth proportional to 4,745.51, 7,120.10 and 1,971.47 is: 2,957.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,745.51 : 7,120.10 = 1,971.47 : x
  2. Step 2: Convert to fraction form
    4,745.51/7,120.10 = 1,971.47/x
  3. Step 3: Cross multiply
    4,745.51x = 7,120.10 × 1,971.47
  4. Step 4: Simplify right side
    4,745.51x = 14,037,018.09
  5. Step 5: Solve for x
    x = 14,037,018.09/4,745.51
  6. Step 6: Final answer
    x = 2,957.96

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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.