Home / 9,618.75-13,273.65-5,640.21

Finding the Fourth Proportional to 9,618.75, 13,273.65 and 5,640.21

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Solution

The fourth proportional to 9,618.75, 13,273.65 and 5,640.21 is: 7,783.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,618.75 : 13,273.65 = 5,640.21 : x
  2. Step 2: Convert to fraction form
    9,618.75/13,273.65 = 5,640.21/x
  3. Step 3: Cross multiply
    9,618.75x = 13,273.65 × 5,640.21
  4. Step 4: Simplify right side
    9,618.75x = 74,866,173.47
  5. Step 5: Solve for x
    x = 74,866,173.47/9,618.75
  6. Step 6: Final answer
    x = 7,783.36

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Half scale
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Double scale
Find fourth proportional to 9,619.75, 13,275.03 and 5,641.21
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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.