Home / 2,038.81-2,813.60-1,107.31

Finding the Fourth Proportional to 2,038.81, 2,813.60 and 1,107.31

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Solution

The fourth proportional to 2,038.81, 2,813.60 and 1,107.31 is: 1,528.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,038.81 : 2,813.60 = 1,107.31 : x
  2. Step 2: Convert to fraction form
    2,038.81/2,813.60 = 1,107.31/x
  3. Step 3: Cross multiply
    2,038.81x = 2,813.60 × 1,107.31
  4. Step 4: Simplify right side
    2,038.81x = 3,115,527.42
  5. Step 5: Solve for x
    x = 3,115,527.42/2,038.81
  6. Step 6: Final answer
    x = 1,528.11

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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.