Home / 7,405.56-10,219.78-4,420.80

Finding the Fourth Proportional to 7,405.56, 10,219.78 and 4,420.80

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Solution

The fourth proportional to 7,405.56, 10,219.78 and 4,420.80 is: 6,100.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.56 : 10,219.78 = 4,420.80 : x
  2. Step 2: Convert to fraction form
    7,405.56/10,219.78 = 4,420.80/x
  3. Step 3: Cross multiply
    7,405.56x = 10,219.78 × 4,420.80
  4. Step 4: Simplify right side
    7,405.56x = 45,179,603.42
  5. Step 5: Solve for x
    x = 45,179,603.42/7,405.56
  6. Step 6: Final answer
    x = 6,100.77

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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.