Home / 7,405.76-10,220.96-4,887.36

Finding the Fourth Proportional to 7,405.76, 10,220.96 and 4,887.36

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Solution

The fourth proportional to 7,405.76, 10,220.96 and 4,887.36 is: 6,745.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.76 : 10,220.96 = 4,887.36 : x
  2. Step 2: Convert to fraction form
    7,405.76/10,220.96 = 4,887.36/x
  3. Step 3: Cross multiply
    7,405.76x = 10,220.96 × 4,887.36
  4. Step 4: Simplify right side
    7,405.76x = 49,953,511.07
  5. Step 5: Solve for x
    x = 49,953,511.07/7,405.76
  6. Step 6: Final answer
    x = 6,745.22

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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.