Home / 3,178.37-4,386.14-1,762.07

Finding the Fourth Proportional to 3,178.37, 4,386.14 and 1,762.07

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Solution

The fourth proportional to 3,178.37, 4,386.14 and 1,762.07 is: 2,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.37 : 4,386.14 = 1,762.07 : x
  2. Step 2: Convert to fraction form
    3,178.37/4,386.14 = 1,762.07/x
  3. Step 3: Cross multiply
    3,178.37x = 4,386.14 × 1,762.07
  4. Step 4: Simplify right side
    3,178.37x = 7,728,663.78
  5. Step 5: Solve for x
    x = 7,728,663.78/3,178.37
  6. Step 6: Final answer
    x = 2,431.64

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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.