Home / 5,877.80-8,111.12-3,518.56

Finding the Fourth Proportional to 5,877.80, 8,111.12 and 3,518.56

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Solution

The fourth proportional to 5,877.80, 8,111.12 and 3,518.56 is: 4,855.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877.80 : 8,111.12 = 3,518.56 : x
  2. Step 2: Convert to fraction form
    5,877.80/8,111.12 = 3,518.56/x
  3. Step 3: Cross multiply
    5,877.80x = 8,111.12 × 3,518.56
  4. Step 4: Simplify right side
    5,877.80x = 28,539,462.39
  5. Step 5: Solve for x
    x = 28,539,462.39/5,877.80
  6. Step 6: Final answer
    x = 4,855.47

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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.