Home / 1,527.30-2,291.43-911.70

Finding the Fourth Proportional to 1,527.30, 2,291.43 and 911.70

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Solution

The fourth proportional to 1,527.30, 2,291.43 and 911.70 is: 1,367.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.30 : 2,291.43 = 911.70 : x
  2. Step 2: Convert to fraction form
    1,527.30/2,291.43 = 911.70/x
  3. Step 3: Cross multiply
    1,527.30x = 2,291.43 × 911.70
  4. Step 4: Simplify right side
    1,527.30x = 2,089,096.73
  5. Step 5: Solve for x
    x = 2,089,096.73/1,527.30
  6. Step 6: Final answer
    x = 1,367.84

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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.