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Finding the Fourth Proportional to 4,584.96, 6,879.60 and 1,987.20

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Solution

The fourth proportional to 4,584.96, 6,879.60 and 1,987.20 is: 2,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,584.96 : 6,879.60 = 1,987.20 : x
  2. Step 2: Convert to fraction form
    4,584.96/6,879.60 = 1,987.20/x
  3. Step 3: Cross multiply
    4,584.96x = 6,879.60 × 1,987.20
  4. Step 4: Simplify right side
    4,584.96x = 13,671,141.12
  5. Step 5: Solve for x
    x = 13,671,141.12/4,584.96
  6. Step 6: Final answer
    x = 2,981.74

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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.