Home / 4,878.51-7,317.99-1,591.80

Finding the Fourth Proportional to 4,878.51, 7,317.99 and 1,591.80

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Solution

The fourth proportional to 4,878.51, 7,317.99 and 1,591.80 is: 2,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.51 : 7,317.99 = 1,591.80 : x
  2. Step 2: Convert to fraction form
    4,878.51/7,317.99 = 1,591.80/x
  3. Step 3: Cross multiply
    4,878.51x = 7,317.99 × 1,591.80
  4. Step 4: Simplify right side
    4,878.51x = 11,648,776.48
  5. Step 5: Solve for x
    x = 11,648,776.48/4,878.51
  6. Step 6: Final answer
    x = 2,387.77

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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.