Home / 6,290.80-8,658.39-5,539.84

Finding the Fourth Proportional to 6,290.80, 8,658.39 and 5,539.84

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Solution

The fourth proportional to 6,290.80, 8,658.39 and 5,539.84 is: 7,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,290.80 : 8,658.39 = 5,539.84 : x
  2. Step 2: Convert to fraction form
    6,290.80/8,658.39 = 5,539.84/x
  3. Step 3: Cross multiply
    6,290.80x = 8,658.39 × 5,539.84
  4. Step 4: Simplify right side
    6,290.80x = 47,966,095.26
  5. Step 5: Solve for x
    x = 47,966,095.26/6,290.80
  6. Step 6: Final answer
    x = 7,624.80

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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.