Home / 3,118.98-4,302.30-1,859.20

Finding the Fourth Proportional to 3,118.98, 4,302.30 and 1,859.20

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Solution

The fourth proportional to 3,118.98, 4,302.30 and 1,859.20 is: 2,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.98 : 4,302.30 = 1,859.20 : x
  2. Step 2: Convert to fraction form
    3,118.98/4,302.30 = 1,859.20/x
  3. Step 3: Cross multiply
    3,118.98x = 4,302.30 × 1,859.20
  4. Step 4: Simplify right side
    3,118.98x = 7,998,814.65
  5. Step 5: Solve for x
    x = 7,998,814.65/3,118.98
  6. Step 6: Final answer
    x = 2,564.56

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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.