Home / 8,280.28-12,421.44-2,658.32

Finding the Fourth Proportional to 8,280.28, 12,421.44 and 2,658.32

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Solution

The fourth proportional to 8,280.28, 12,421.44 and 2,658.32 is: 3,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.28 : 12,421.44 = 2,658.32 : x
  2. Step 2: Convert to fraction form
    8,280.28/12,421.44 = 2,658.32/x
  3. Step 3: Cross multiply
    8,280.28x = 12,421.44 × 2,658.32
  4. Step 4: Simplify right side
    8,280.28x = 33,020,162.38
  5. Step 5: Solve for x
    x = 33,020,162.38/8,280.28
  6. Step 6: Final answer
    x = 3,987.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.