Home / 7,759.17-11,638.45-1,915.63

Finding the Fourth Proportional to 7,759.17, 11,638.45 and 1,915.63

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Solution

The fourth proportional to 7,759.17, 11,638.45 and 1,915.63 is: 2,873.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759.17 : 11,638.45 = 1,915.63 : x
  2. Step 2: Convert to fraction form
    7,759.17/11,638.45 = 1,915.63/x
  3. Step 3: Cross multiply
    7,759.17x = 11,638.45 × 1,915.63
  4. Step 4: Simplify right side
    7,759.17x = 22,294,963.97
  5. Step 5: Solve for x
    x = 22,294,963.97/7,759.17
  6. Step 6: Final answer
    x = 2,873.37

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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.