Home / 1,567.11-2,162.12-903.87

Finding the Fourth Proportional to 1,567.11, 2,162.12 and 903.87

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Solution

The fourth proportional to 1,567.11, 2,162.12 and 903.87 is: 1,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.11 : 2,162.12 = 903.87 : x
  2. Step 2: Convert to fraction form
    1,567.11/2,162.12 = 903.87/x
  3. Step 3: Cross multiply
    1,567.11x = 2,162.12 × 903.87
  4. Step 4: Simplify right side
    1,567.11x = 1,954,270.89
  5. Step 5: Solve for x
    x = 1,954,270.89/1,567.11
  6. Step 6: Final answer
    x = 1,247.05

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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.