Home / 4,807.84-6,632.80-3,128.71

Finding the Fourth Proportional to 4,807.84, 6,632.80 and 3,128.71

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Solution

The fourth proportional to 4,807.84, 6,632.80 and 3,128.71 is: 4,316.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.84 : 6,632.80 = 3,128.71 : x
  2. Step 2: Convert to fraction form
    4,807.84/6,632.80 = 3,128.71/x
  3. Step 3: Cross multiply
    4,807.84x = 6,632.80 × 3,128.71
  4. Step 4: Simplify right side
    4,807.84x = 20,752,107.69
  5. Step 5: Solve for x
    x = 20,752,107.69/4,807.84
  6. Step 6: Final answer
    x = 4,316.31

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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.