Home / 1,568.15-2,163.47-938.69

Finding the Fourth Proportional to 1,568.15, 2,163.47 and 938.69

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Solution

The fourth proportional to 1,568.15, 2,163.47 and 938.69 is: 1,295.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.15 : 2,163.47 = 938.69 : x
  2. Step 2: Convert to fraction form
    1,568.15/2,163.47 = 938.69/x
  3. Step 3: Cross multiply
    1,568.15x = 2,163.47 × 938.69
  4. Step 4: Simplify right side
    1,568.15x = 2,030,827.65
  5. Step 5: Solve for x
    x = 2,030,827.65/1,568.15
  6. Step 6: Final answer
    x = 1,295.05

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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.