Home / 8,428.37-12,658.95-6,869.52

Finding the Fourth Proportional to 8,428.37, 12,658.95 and 6,869.52

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Solution

The fourth proportional to 8,428.37, 12,658.95 and 6,869.52 is: 10,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.37 : 12,658.95 = 6,869.52 : x
  2. Step 2: Convert to fraction form
    8,428.37/12,658.95 = 6,869.52/x
  3. Step 3: Cross multiply
    8,428.37x = 12,658.95 × 6,869.52
  4. Step 4: Simplify right side
    8,428.37x = 86,960,910.20
  5. Step 5: Solve for x
    x = 86,960,910.20/8,428.37
  6. Step 6: Final answer
    x = 10,317.65

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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.