Home / 1,527.28-2,289.84-705.12

Finding the Fourth Proportional to 1,527.28, 2,289.84 and 705.12

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Solution

The fourth proportional to 1,527.28, 2,289.84 and 705.12 is: 1,057.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.28 : 2,289.84 = 705.12 : x
  2. Step 2: Convert to fraction form
    1,527.28/2,289.84 = 705.12/x
  3. Step 3: Cross multiply
    1,527.28x = 2,289.84 × 705.12
  4. Step 4: Simplify right side
    1,527.28x = 1,614,611.98
  5. Step 5: Solve for x
    x = 1,614,611.98/1,527.28
  6. Step 6: Final answer
    x = 1,057.18

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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.