Home / 7,146.49-9,860.37-4,122.54

Finding the Fourth Proportional to 7,146.49, 9,860.37 and 4,122.54

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Solution

The fourth proportional to 7,146.49, 9,860.37 and 4,122.54 is: 5,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.49 : 9,860.37 = 4,122.54 : x
  2. Step 2: Convert to fraction form
    7,146.49/9,860.37 = 4,122.54/x
  3. Step 3: Cross multiply
    7,146.49x = 9,860.37 × 4,122.54
  4. Step 4: Simplify right side
    7,146.49x = 40,649,699.83
  5. Step 5: Solve for x
    x = 40,649,699.83/7,146.49
  6. Step 6: Final answer
    x = 5,688.07

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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.