Home / 2,407.12-3,321.60-1,359.28

Finding the Fourth Proportional to 2,407.12, 3,321.60 and 1,359.28

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Solution

The fourth proportional to 2,407.12, 3,321.60 and 1,359.28 is: 1,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.12 : 3,321.60 = 1,359.28 : x
  2. Step 2: Convert to fraction form
    2,407.12/3,321.60 = 1,359.28/x
  3. Step 3: Cross multiply
    2,407.12x = 3,321.60 × 1,359.28
  4. Step 4: Simplify right side
    2,407.12x = 4,514,984.45
  5. Step 5: Solve for x
    x = 4,514,984.45/2,407.12
  6. Step 6: Final answer
    x = 1,875.68

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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.