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Finding the Fourth Proportional to 7,984.80, 11,965.80 and 5,888.28

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Solution

The fourth proportional to 7,984.80, 11,965.80 and 5,888.28 is: 8,824.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.80 : 11,965.80 = 5,888.28 : x
  2. Step 2: Convert to fraction form
    7,984.80/11,965.80 = 5,888.28/x
  3. Step 3: Cross multiply
    7,984.80x = 11,965.80 × 5,888.28
  4. Step 4: Simplify right side
    7,984.80x = 70,457,980.82
  5. Step 5: Solve for x
    x = 70,457,980.82/7,984.80
  6. Step 6: Final answer
    x = 8,824.01

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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.