Home / 5,715.80-8,573.70-3,123.80

Finding the Fourth Proportional to 5,715.80, 8,573.70 and 3,123.80

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Solution

The fourth proportional to 5,715.80, 8,573.70 and 3,123.80 is: 4,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.80 : 8,573.70 = 3,123.80 : x
  2. Step 2: Convert to fraction form
    5,715.80/8,573.70 = 3,123.80/x
  3. Step 3: Cross multiply
    5,715.80x = 8,573.70 × 3,123.80
  4. Step 4: Simplify right side
    5,715.80x = 26,782,524.06
  5. Step 5: Solve for x
    x = 26,782,524.06/5,715.80
  6. Step 6: Final answer
    x = 4,685.70

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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.