Home / 1,868.16-2,578.50-1,159.60

Finding the Fourth Proportional to 1,868.16, 2,578.50 and 1,159.60

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Solution

The fourth proportional to 1,868.16, 2,578.50 and 1,159.60 is: 1,600.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.16 : 2,578.50 = 1,159.60 : x
  2. Step 2: Convert to fraction form
    1,868.16/2,578.50 = 1,159.60/x
  3. Step 3: Cross multiply
    1,868.16x = 2,578.50 × 1,159.60
  4. Step 4: Simplify right side
    1,868.16x = 2,990,028.60
  5. Step 5: Solve for x
    x = 2,990,028.60/1,868.16
  6. Step 6: Final answer
    x = 1,600.52

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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.