Home / 5,866.80-8,090.77-3,981.12

Finding the Fourth Proportional to 5,866.80, 8,090.77 and 3,981.12

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Solution

The fourth proportional to 5,866.80, 8,090.77 and 3,981.12 is: 5,490.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,866.80 : 8,090.77 = 3,981.12 : x
  2. Step 2: Convert to fraction form
    5,866.80/8,090.77 = 3,981.12/x
  3. Step 3: Cross multiply
    5,866.80x = 8,090.77 × 3,981.12
  4. Step 4: Simplify right side
    5,866.80x = 32,210,326.26
  5. Step 5: Solve for x
    x = 32,210,326.26/5,866.80
  6. Step 6: Final answer
    x = 5,490.27

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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.