Home / 7,814.64-11,721.54-1,970.91

Finding the Fourth Proportional to 7,814.64, 11,721.54 and 1,970.91

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Solution

The fourth proportional to 7,814.64, 11,721.54 and 1,970.91 is: 2,956.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.64 : 11,721.54 = 1,970.91 : x
  2. Step 2: Convert to fraction form
    7,814.64/11,721.54 = 1,970.91/x
  3. Step 3: Cross multiply
    7,814.64x = 11,721.54 × 1,970.91
  4. Step 4: Simplify right side
    7,814.64x = 23,102,100.40
  5. Step 5: Solve for x
    x = 23,102,100.40/7,814.64
  6. Step 6: Final answer
    x = 2,956.26

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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.