Home / 4,752.39-7,128.59-2,119.22

Finding the Fourth Proportional to 4,752.39, 7,128.59 and 2,119.22

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Solution

The fourth proportional to 4,752.39, 7,128.59 and 2,119.22 is: 3,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.39 : 7,128.59 = 2,119.22 : x
  2. Step 2: Convert to fraction form
    4,752.39/7,128.59 = 2,119.22/x
  3. Step 3: Cross multiply
    4,752.39x = 7,128.59 × 2,119.22
  4. Step 4: Simplify right side
    4,752.39x = 15,107,050.50
  5. Step 5: Solve for x
    x = 15,107,050.50/4,752.39
  6. Step 6: Final answer
    x = 3,178.83

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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.