Home / 7,987.20-11,982.60-4,698.60

Finding the Fourth Proportional to 7,987.20, 11,982.60 and 4,698.60

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Solution

The fourth proportional to 7,987.20, 11,982.60 and 4,698.60 is: 7,048.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.20 : 11,982.60 = 4,698.60 : x
  2. Step 2: Convert to fraction form
    7,987.20/11,982.60 = 4,698.60/x
  3. Step 3: Cross multiply
    7,987.20x = 11,982.60 × 4,698.60
  4. Step 4: Simplify right side
    7,987.20x = 56,301,444.36
  5. Step 5: Solve for x
    x = 56,301,444.36/7,987.20
  6. Step 6: Final answer
    x = 7,048.96

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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.