Home / 4,758.48-7,138.59-1,983.78

Finding the Fourth Proportional to 4,758.48, 7,138.59 and 1,983.78

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Solution

The fourth proportional to 4,758.48, 7,138.59 and 1,983.78 is: 2,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,758.48 : 7,138.59 = 1,983.78 : x
  2. Step 2: Convert to fraction form
    4,758.48/7,138.59 = 1,983.78/x
  3. Step 3: Cross multiply
    4,758.48x = 7,138.59 × 1,983.78
  4. Step 4: Simplify right side
    4,758.48x = 14,161,392.07
  5. Step 5: Solve for x
    x = 14,161,392.07/4,758.48
  6. Step 6: Final answer
    x = 2,976.03

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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.