Home / 2,101.40-3,148.00-1,277.63

Finding the Fourth Proportional to 2,101.40, 3,148.00 and 1,277.63

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Solution

The fourth proportional to 2,101.40, 3,148.00 and 1,277.63 is: 1,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.40 : 3,148.00 = 1,277.63 : x
  2. Step 2: Convert to fraction form
    2,101.40/3,148.00 = 1,277.63/x
  3. Step 3: Cross multiply
    2,101.40x = 3,148.00 × 1,277.63
  4. Step 4: Simplify right side
    2,101.40x = 4,021,980.96
  5. Step 5: Solve for x
    x = 4,021,980.96/2,101.40
  6. Step 6: Final answer
    x = 1,913.95

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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.