Home / 8,545.40-12,821.70-4,160.60

Finding the Fourth Proportional to 8,545.40, 12,821.70 and 4,160.60

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Solution

The fourth proportional to 8,545.40, 12,821.70 and 4,160.60 is: 6,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.40 : 12,821.70 = 4,160.60 : x
  2. Step 2: Convert to fraction form
    8,545.40/12,821.70 = 4,160.60/x
  3. Step 3: Cross multiply
    8,545.40x = 12,821.70 × 4,160.60
  4. Step 4: Simplify right side
    8,545.40x = 53,345,965.02
  5. Step 5: Solve for x
    x = 53,345,965.02/8,545.40
  6. Step 6: Final answer
    x = 6,242.65

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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.