Home / 4,985.70-6,875.73-3,991.02

Finding the Fourth Proportional to 4,985.70, 6,875.73 and 3,991.02

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Solution

The fourth proportional to 4,985.70, 6,875.73 and 3,991.02 is: 5,503.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.70 : 6,875.73 = 3,991.02 : x
  2. Step 2: Convert to fraction form
    4,985.70/6,875.73 = 3,991.02/x
  3. Step 3: Cross multiply
    4,985.70x = 6,875.73 × 3,991.02
  4. Step 4: Simplify right side
    4,985.70x = 27,441,175.94
  5. Step 5: Solve for x
    x = 27,441,175.94/4,985.70
  6. Step 6: Final answer
    x = 5,503.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.