Home / 7,988.80-11,977.53-3,054.28

Finding the Fourth Proportional to 7,988.80, 11,977.53 and 3,054.28

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Solution

The fourth proportional to 7,988.80, 11,977.53 and 3,054.28 is: 4,579.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.80 : 11,977.53 = 3,054.28 : x
  2. Step 2: Convert to fraction form
    7,988.80/11,977.53 = 3,054.28/x
  3. Step 3: Cross multiply
    7,988.80x = 11,977.53 × 3,054.28
  4. Step 4: Simplify right side
    7,988.80x = 36,582,730.33
  5. Step 5: Solve for x
    x = 36,582,730.33/7,988.80
  6. Step 6: Final answer
    x = 4,579.25

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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.