Home / 7,131.03-9,840.31-4,146.65

Finding the Fourth Proportional to 7,131.03, 9,840.31 and 4,146.65

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Solution

The fourth proportional to 7,131.03, 9,840.31 and 4,146.65 is: 5,722.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.03 : 9,840.31 = 4,146.65 : x
  2. Step 2: Convert to fraction form
    7,131.03/9,840.31 = 4,146.65/x
  3. Step 3: Cross multiply
    7,131.03x = 9,840.31 × 4,146.65
  4. Step 4: Simplify right side
    7,131.03x = 40,804,321.46
  5. Step 5: Solve for x
    x = 40,804,321.46/7,131.03
  6. Step 6: Final answer
    x = 5,722.08

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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.