Home / 3,919.51-5,409.18-2,590.91

Finding the Fourth Proportional to 3,919.51, 5,409.18 and 2,590.91

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Solution

The fourth proportional to 3,919.51, 5,409.18 and 2,590.91 is: 3,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.51 : 5,409.18 = 2,590.91 : x
  2. Step 2: Convert to fraction form
    3,919.51/5,409.18 = 2,590.91/x
  3. Step 3: Cross multiply
    3,919.51x = 5,409.18 × 2,590.91
  4. Step 4: Simplify right side
    3,919.51x = 14,014,707.01
  5. Step 5: Solve for x
    x = 14,014,707.01/3,919.51
  6. Step 6: Final answer
    x = 3,575.62

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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.