Home / 7,815.02-11,722.54-1,972.08

Finding the Fourth Proportional to 7,815.02, 11,722.54 and 1,972.08

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Solution

The fourth proportional to 7,815.02, 11,722.54 and 1,972.08 is: 2,958.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.02 : 11,722.54 = 1,972.08 : x
  2. Step 2: Convert to fraction form
    7,815.02/11,722.54 = 1,972.08/x
  3. Step 3: Cross multiply
    7,815.02x = 11,722.54 × 1,972.08
  4. Step 4: Simplify right side
    7,815.02x = 23,117,786.68
  5. Step 5: Solve for x
    x = 23,117,786.68/7,815.02
  6. Step 6: Final answer
    x = 2,958.12

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1.5x scale

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.