Home / 2,107.52-3,157.32-1,587.68

Finding the Fourth Proportional to 2,107.52, 3,157.32 and 1,587.68

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Solution

The fourth proportional to 2,107.52, 3,157.32 and 1,587.68 is: 2,378.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.52 : 3,157.32 = 1,587.68 : x
  2. Step 2: Convert to fraction form
    2,107.52/3,157.32 = 1,587.68/x
  3. Step 3: Cross multiply
    2,107.52x = 3,157.32 × 1,587.68
  4. Step 4: Simplify right side
    2,107.52x = 5,012,813.82
  5. Step 5: Solve for x
    x = 5,012,813.82/2,107.52
  6. Step 6: Final answer
    x = 2,378.54

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1.5x scale

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.