Home / 7,412.76-10,220.94-6,155.28

Finding the Fourth Proportional to 7,412.76, 10,220.94 and 6,155.28

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Solution

The fourth proportional to 7,412.76, 10,220.94 and 6,155.28 is: 8,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.76 : 10,220.94 = 6,155.28 : x
  2. Step 2: Convert to fraction form
    7,412.76/10,220.94 = 6,155.28/x
  3. Step 3: Cross multiply
    7,412.76x = 10,220.94 × 6,155.28
  4. Step 4: Simplify right side
    7,412.76x = 62,912,747.56
  5. Step 5: Solve for x
    x = 62,912,747.56/7,412.76
  6. Step 6: Final answer
    x = 8,487.09

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Half scale
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Double scale
Find fourth proportional to 7,413.76, 10,222.32 and 6,156.28
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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.