Home / 5,821.80-8,686.47-5,408.88

Finding the Fourth Proportional to 5,821.80, 8,686.47 and 5,408.88

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Solution

The fourth proportional to 5,821.80, 8,686.47 and 5,408.88 is: 8,070.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.80 : 8,686.47 = 5,408.88 : x
  2. Step 2: Convert to fraction form
    5,821.80/8,686.47 = 5,408.88/x
  3. Step 3: Cross multiply
    5,821.80x = 8,686.47 × 5,408.88
  4. Step 4: Simplify right side
    5,821.80x = 46,984,073.85
  5. Step 5: Solve for x
    x = 46,984,073.85/5,821.80
  6. Step 6: Final answer
    x = 8,070.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.