Home / 3,120.39-4,681.73-1,477.19

Finding the Fourth Proportional to 3,120.39, 4,681.73 and 1,477.19

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Solution

The fourth proportional to 3,120.39, 4,681.73 and 1,477.19 is: 2,216.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.39 : 4,681.73 = 1,477.19 : x
  2. Step 2: Convert to fraction form
    3,120.39/4,681.73 = 1,477.19/x
  3. Step 3: Cross multiply
    3,120.39x = 4,681.73 × 1,477.19
  4. Step 4: Simplify right side
    3,120.39x = 6,915,820.14
  5. Step 5: Solve for x
    x = 6,915,820.14/3,120.39
  6. Step 6: Final answer
    x = 2,216.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.