Home / 1,915.98-2,643.60-1,130.07

Finding the Fourth Proportional to 1,915.98, 2,643.60 and 1,130.07

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Solution

The fourth proportional to 1,915.98, 2,643.60 and 1,130.07 is: 1,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.98 : 2,643.60 = 1,130.07 : x
  2. Step 2: Convert to fraction form
    1,915.98/2,643.60 = 1,130.07/x
  3. Step 3: Cross multiply
    1,915.98x = 2,643.60 × 1,130.07
  4. Step 4: Simplify right side
    1,915.98x = 2,987,453.05
  5. Step 5: Solve for x
    x = 2,987,453.05/1,915.98
  6. Step 6: Final answer
    x = 1,559.23

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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.