Home / 7,172.31-9,897.21-4,027.89

Finding the Fourth Proportional to 7,172.31, 9,897.21 and 4,027.89

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Solution

The fourth proportional to 7,172.31, 9,897.21 and 4,027.89 is: 5,558.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.31 : 9,897.21 = 4,027.89 : x
  2. Step 2: Convert to fraction form
    7,172.31/9,897.21 = 4,027.89/x
  3. Step 3: Cross multiply
    7,172.31x = 9,897.21 × 4,027.89
  4. Step 4: Simplify right side
    7,172.31x = 39,864,873.19
  5. Step 5: Solve for x
    x = 39,864,873.19/7,172.31
  6. Step 6: Final answer
    x = 5,558.16

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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.