Home / 3,128.06-4,316.72-1,783.62

Finding the Fourth Proportional to 3,128.06, 4,316.72 and 1,783.62

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Solution

The fourth proportional to 3,128.06, 4,316.72 and 1,783.62 is: 2,461.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.06 : 4,316.72 = 1,783.62 : x
  2. Step 2: Convert to fraction form
    3,128.06/4,316.72 = 1,783.62/x
  3. Step 3: Cross multiply
    3,128.06x = 4,316.72 × 1,783.62
  4. Step 4: Simplify right side
    3,128.06x = 7,699,388.13
  5. Step 5: Solve for x
    x = 7,699,388.13/3,128.06
  6. Step 6: Final answer
    x = 2,461.39

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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.