Home / 2,179.60-3,009.24-1,681.32

Finding the Fourth Proportional to 2,179.60, 3,009.24 and 1,681.32

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Solution

The fourth proportional to 2,179.60, 3,009.24 and 1,681.32 is: 2,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.60 : 3,009.24 = 1,681.32 : x
  2. Step 2: Convert to fraction form
    2,179.60/3,009.24 = 1,681.32/x
  3. Step 3: Cross multiply
    2,179.60x = 3,009.24 × 1,681.32
  4. Step 4: Simplify right side
    2,179.60x = 5,059,495.40
  5. Step 5: Solve for x
    x = 5,059,495.40/2,179.60
  6. Step 6: Final answer
    x = 2,321.30

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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.