Home / 7,970.40-11,955.60-2,775.06

Finding the Fourth Proportional to 7,970.40, 11,955.60 and 2,775.06

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Solution

The fourth proportional to 7,970.40, 11,955.60 and 2,775.06 is: 4,162.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,970.40 : 11,955.60 = 2,775.06 : x
  2. Step 2: Convert to fraction form
    7,970.40/11,955.60 = 2,775.06/x
  3. Step 3: Cross multiply
    7,970.40x = 11,955.60 × 2,775.06
  4. Step 4: Simplify right side
    7,970.40x = 33,177,507.34
  5. Step 5: Solve for x
    x = 33,177,507.34/7,970.40
  6. Step 6: Final answer
    x = 4,162.59

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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.