Home / 3,140.55-4,712.03-1,407.93

Finding the Fourth Proportional to 3,140.55, 4,712.03 and 1,407.93

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Solution

The fourth proportional to 3,140.55, 4,712.03 and 1,407.93 is: 2,112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.55 : 4,712.03 = 1,407.93 : x
  2. Step 2: Convert to fraction form
    3,140.55/4,712.03 = 1,407.93/x
  3. Step 3: Cross multiply
    3,140.55x = 4,712.03 × 1,407.93
  4. Step 4: Simplify right side
    3,140.55x = 6,634,201.36
  5. Step 5: Solve for x
    x = 6,634,201.36/3,140.55
  6. Step 6: Final answer
    x = 2,112.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.