Home / 1,685.27-2,528.18-530.75

Finding the Fourth Proportional to 1,685.27, 2,528.18 and 530.75

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Solution

The fourth proportional to 1,685.27, 2,528.18 and 530.75 is: 796.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.27 : 2,528.18 = 530.75 : x
  2. Step 2: Convert to fraction form
    1,685.27/2,528.18 = 530.75/x
  3. Step 3: Cross multiply
    1,685.27x = 2,528.18 × 530.75
  4. Step 4: Simplify right side
    1,685.27x = 1,341,831.54
  5. Step 5: Solve for x
    x = 1,341,831.54/1,685.27
  6. Step 6: Final answer
    x = 796.21

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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.