Home / 9,660.39-13,331.08-5,681.75

Finding the Fourth Proportional to 9,660.39, 13,331.08 and 5,681.75

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Solution

The fourth proportional to 9,660.39, 13,331.08 and 5,681.75 is: 7,840.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,660.39 : 13,331.08 = 5,681.75 : x
  2. Step 2: Convert to fraction form
    9,660.39/13,331.08 = 5,681.75/x
  3. Step 3: Cross multiply
    9,660.39x = 13,331.08 × 5,681.75
  4. Step 4: Simplify right side
    9,660.39x = 75,743,804.24
  5. Step 5: Solve for x
    x = 75,743,804.24/9,660.39
  6. Step 6: Final answer
    x = 7,840.66

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Half scale
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Double scale
Find fourth proportional to 9,661.39, 13,332.46 and 5,682.75
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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.