Home / 5,880.80-8,115.93-3,887.90

Finding the Fourth Proportional to 5,880.80, 8,115.93 and 3,887.90

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Solution

The fourth proportional to 5,880.80, 8,115.93 and 3,887.90 is: 5,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,880.80 : 8,115.93 = 3,887.90 : x
  2. Step 2: Convert to fraction form
    5,880.80/8,115.93 = 3,887.90/x
  3. Step 3: Cross multiply
    5,880.80x = 8,115.93 × 3,887.90
  4. Step 4: Simplify right side
    5,880.80x = 31,553,924.25
  5. Step 5: Solve for x
    x = 31,553,924.25/5,880.80
  6. Step 6: Final answer
    x = 5,365.58

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1.5x scale

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.