Home / 6,271.70-9,409-2,111.60

Finding the Fourth Proportional to 6,271.70, 9,409 and 2,111.60

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Solution

The fourth proportional to 6,271.70, 9,409 and 2,111.60 is: 3,167.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,271.70 : 9,409 = 2,111.60 : x
  2. Step 2: Convert to fraction form
    6,271.70/9,409 = 2,111.60/x
  3. Step 3: Cross multiply
    6,271.70x = 9,409 × 2,111.60
  4. Step 4: Simplify right side
    6,271.70x = 19,868,044.40
  5. Step 5: Solve for x
    x = 19,868,044.40/6,271.70
  6. Step 6: Final answer
    x = 3,167.89

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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.