Home / 5,111.40-7,050.21-4,939.98

Finding the Fourth Proportional to 5,111.40, 7,050.21 and 4,939.98

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Solution

The fourth proportional to 5,111.40, 7,050.21 and 4,939.98 is: 6,813.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.40 : 7,050.21 = 4,939.98 : x
  2. Step 2: Convert to fraction form
    5,111.40/7,050.21 = 4,939.98/x
  3. Step 3: Cross multiply
    5,111.40x = 7,050.21 × 4,939.98
  4. Step 4: Simplify right side
    5,111.40x = 34,827,896.40
  5. Step 5: Solve for x
    x = 34,827,896.40/5,111.40
  6. Step 6: Final answer
    x = 6,813.77

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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.