Home / 2,107.50-2,913.12-1,920.36

Finding the Fourth Proportional to 2,107.50, 2,913.12 and 1,920.36

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Solution

The fourth proportional to 2,107.50, 2,913.12 and 1,920.36 is: 2,654.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.50 : 2,913.12 = 1,920.36 : x
  2. Step 2: Convert to fraction form
    2,107.50/2,913.12 = 1,920.36/x
  3. Step 3: Cross multiply
    2,107.50x = 2,913.12 × 1,920.36
  4. Step 4: Simplify right side
    2,107.50x = 5,594,239.12
  5. Step 5: Solve for x
    x = 5,594,239.12/2,107.50
  6. Step 6: Final answer
    x = 2,654.44

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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.