Home / 2,154.36-2,972.54-1,369.40

Finding the Fourth Proportional to 2,154.36, 2,972.54 and 1,369.40

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Solution

The fourth proportional to 2,154.36, 2,972.54 and 1,369.40 is: 1,889.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.36 : 2,972.54 = 1,369.40 : x
  2. Step 2: Convert to fraction form
    2,154.36/2,972.54 = 1,369.40/x
  3. Step 3: Cross multiply
    2,154.36x = 2,972.54 × 1,369.40
  4. Step 4: Simplify right side
    2,154.36x = 4,070,596.28
  5. Step 5: Solve for x
    x = 4,070,596.28/2,154.36
  6. Step 6: Final answer
    x = 1,889.47

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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.