Home / 1,527.45-2,107.87-828.82

Finding the Fourth Proportional to 1,527.45, 2,107.87 and 828.82

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Solution

The fourth proportional to 1,527.45, 2,107.87 and 828.82 is: 1,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.45 : 2,107.87 = 828.82 : x
  2. Step 2: Convert to fraction form
    1,527.45/2,107.87 = 828.82/x
  3. Step 3: Cross multiply
    1,527.45x = 2,107.87 × 828.82
  4. Step 4: Simplify right side
    1,527.45x = 1,747,040.67
  5. Step 5: Solve for x
    x = 1,747,040.67/1,527.45
  6. Step 6: Final answer
    x = 1,143.77

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1.5x scale

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.