Home / 7,577.78-10,456.59-4,220.90

Finding the Fourth Proportional to 7,577.78, 10,456.59 and 4,220.90

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Solution

The fourth proportional to 7,577.78, 10,456.59 and 4,220.90 is: 5,824.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,577.78 : 10,456.59 = 4,220.90 : x
  2. Step 2: Convert to fraction form
    7,577.78/10,456.59 = 4,220.90/x
  3. Step 3: Cross multiply
    7,577.78x = 10,456.59 × 4,220.90
  4. Step 4: Simplify right side
    7,577.78x = 44,136,258.56
  5. Step 5: Solve for x
    x = 44,136,258.56/7,577.78
  6. Step 6: Final answer
    x = 5,824.43

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Half scale
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Double scale
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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.