Home / 7,898.28-11,853.54-2,972.40

Finding the Fourth Proportional to 7,898.28, 11,853.54 and 2,972.40

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Solution

The fourth proportional to 7,898.28, 11,853.54 and 2,972.40 is: 4,460.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.28 : 11,853.54 = 2,972.40 : x
  2. Step 2: Convert to fraction form
    7,898.28/11,853.54 = 2,972.40/x
  3. Step 3: Cross multiply
    7,898.28x = 11,853.54 × 2,972.40
  4. Step 4: Simplify right side
    7,898.28x = 35,233,462.30
  5. Step 5: Solve for x
    x = 35,233,462.30/7,898.28
  6. Step 6: Final answer
    x = 4,460.90

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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.