Home / 3,128.09-4,316.72-1,730.84

Finding the Fourth Proportional to 3,128.09, 4,316.72 and 1,730.84

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Solution

The fourth proportional to 3,128.09, 4,316.72 and 1,730.84 is: 2,388.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.09 : 4,316.72 = 1,730.84 : x
  2. Step 2: Convert to fraction form
    3,128.09/4,316.72 = 1,730.84/x
  3. Step 3: Cross multiply
    3,128.09x = 4,316.72 × 1,730.84
  4. Step 4: Simplify right side
    3,128.09x = 7,471,521.41
  5. Step 5: Solve for x
    x = 7,471,521.41/3,128.09
  6. Step 6: Final answer
    x = 2,388.53

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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.