Home / 3,618.51-4,991.67-2,289.93

Finding the Fourth Proportional to 3,618.51, 4,991.67 and 2,289.93

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Solution

The fourth proportional to 3,618.51, 4,991.67 and 2,289.93 is: 3,158.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.51 : 4,991.67 = 2,289.93 : x
  2. Step 2: Convert to fraction form
    3,618.51/4,991.67 = 2,289.93/x
  3. Step 3: Cross multiply
    3,618.51x = 4,991.67 × 2,289.93
  4. Step 4: Simplify right side
    3,618.51x = 11,430,574.88
  5. Step 5: Solve for x
    x = 11,430,574.88/3,618.51
  6. Step 6: Final answer
    x = 3,158.92

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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.