Home / 6,840.19-9,436.12-4,321.09

Finding the Fourth Proportional to 6,840.19, 9,436.12 and 4,321.09

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Solution

The fourth proportional to 6,840.19, 9,436.12 and 4,321.09 is: 5,960.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.19 : 9,436.12 = 4,321.09 : x
  2. Step 2: Convert to fraction form
    6,840.19/9,436.12 = 4,321.09/x
  3. Step 3: Cross multiply
    6,840.19x = 9,436.12 × 4,321.09
  4. Step 4: Simplify right side
    6,840.19x = 40,774,323.77
  5. Step 5: Solve for x
    x = 40,774,323.77/6,840.19
  6. Step 6: Final answer
    x = 5,960.99

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Half scale
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Double scale
Find fourth proportional to 6,841.19, 9,437.50 and 4,322.09
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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.