Home / 5,190.80-7,776.88-2,848.28

Finding the Fourth Proportional to 5,190.80, 7,776.88 and 2,848.28

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Solution

The fourth proportional to 5,190.80, 7,776.88 and 2,848.28 is: 4,267.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.80 : 7,776.88 = 2,848.28 : x
  2. Step 2: Convert to fraction form
    5,190.80/7,776.88 = 2,848.28/x
  3. Step 3: Cross multiply
    5,190.80x = 7,776.88 × 2,848.28
  4. Step 4: Simplify right side
    5,190.80x = 22,150,731.77
  5. Step 5: Solve for x
    x = 22,150,731.77/5,190.80
  6. Step 6: Final answer
    x = 4,267.31

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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.