Home / 2,127.48-3,187.06-1,394.84

Finding the Fourth Proportional to 2,127.48, 3,187.06 and 1,394.84

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Solution

The fourth proportional to 2,127.48, 3,187.06 and 1,394.84 is: 2,089.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.48 : 3,187.06 = 1,394.84 : x
  2. Step 2: Convert to fraction form
    2,127.48/3,187.06 = 1,394.84/x
  3. Step 3: Cross multiply
    2,127.48x = 3,187.06 × 1,394.84
  4. Step 4: Simplify right side
    2,127.48x = 4,445,438.77
  5. Step 5: Solve for x
    x = 4,445,438.77/2,127.48
  6. Step 6: Final answer
    x = 2,089.53

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1.5x scale

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.