Home / 2,138.76-3,210.56-1,436.48

Finding the Fourth Proportional to 2,138.76, 3,210.56 and 1,436.48

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Solution

The fourth proportional to 2,138.76, 3,210.56 and 1,436.48 is: 2,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.76 : 3,210.56 = 1,436.48 : x
  2. Step 2: Convert to fraction form
    2,138.76/3,210.56 = 1,436.48/x
  3. Step 3: Cross multiply
    2,138.76x = 3,210.56 × 1,436.48
  4. Step 4: Simplify right side
    2,138.76x = 4,611,905.23
  5. Step 5: Solve for x
    x = 4,611,905.23/2,138.76
  6. Step 6: Final answer
    x = 2,156.35

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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.