Home / 5,578.51-8,370.99-2,118.19

Finding the Fourth Proportional to 5,578.51, 8,370.99 and 2,118.19

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Solution

The fourth proportional to 5,578.51, 8,370.99 and 2,118.19 is: 3,178.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.51 : 8,370.99 = 2,118.19 : x
  2. Step 2: Convert to fraction form
    5,578.51/8,370.99 = 2,118.19/x
  3. Step 3: Cross multiply
    5,578.51x = 8,370.99 × 2,118.19
  4. Step 4: Simplify right side
    5,578.51x = 17,731,347.31
  5. Step 5: Solve for x
    x = 17,731,347.31/5,578.51
  6. Step 6: Final answer
    x = 3,178.51

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Double scale
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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.