Home / 1,868.48-2,578.16-1,170.80

Finding the Fourth Proportional to 1,868.48, 2,578.16 and 1,170.80

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Solution

The fourth proportional to 1,868.48, 2,578.16 and 1,170.80 is: 1,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.48 : 2,578.16 = 1,170.80 : x
  2. Step 2: Convert to fraction form
    1,868.48/2,578.16 = 1,170.80/x
  3. Step 3: Cross multiply
    1,868.48x = 2,578.16 × 1,170.80
  4. Step 4: Simplify right side
    1,868.48x = 3,018,509.73
  5. Step 5: Solve for x
    x = 3,018,509.73/1,868.48
  6. Step 6: Final answer
    x = 1,615.49

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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.