Home / 1,277.18-1,915.80-1,022.30

Finding the Fourth Proportional to 1,277.18, 1,915.80 and 1,022.30

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Solution

The fourth proportional to 1,277.18, 1,915.80 and 1,022.30 is: 1,533.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.18 : 1,915.80 = 1,022.30 : x
  2. Step 2: Convert to fraction form
    1,277.18/1,915.80 = 1,022.30/x
  3. Step 3: Cross multiply
    1,277.18x = 1,915.80 × 1,022.30
  4. Step 4: Simplify right side
    1,277.18x = 1,958,522.34
  5. Step 5: Solve for x
    x = 1,958,522.34/1,277.18
  6. Step 6: Final answer
    x = 1,533.47

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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.