Home / 2,127.57-2,934-1,381.74

Finding the Fourth Proportional to 2,127.57, 2,934 and 1,381.74

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Solution

The fourth proportional to 2,127.57, 2,934 and 1,381.74 is: 1,905.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.57 : 2,934 = 1,381.74 : x
  2. Step 2: Convert to fraction form
    2,127.57/2,934 = 1,381.74/x
  3. Step 3: Cross multiply
    2,127.57x = 2,934 × 1,381.74
  4. Step 4: Simplify right side
    2,127.57x = 4,054,025.16
  5. Step 5: Solve for x
    x = 4,054,025.16/2,127.57
  6. Step 6: Final answer
    x = 1,905.47

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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.