Home / 5,673.70-7,830.56-4,085.61

Finding the Fourth Proportional to 5,673.70, 7,830.56 and 4,085.61

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Solution

The fourth proportional to 5,673.70, 7,830.56 and 4,085.61 is: 5,638.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.70 : 7,830.56 = 4,085.61 : x
  2. Step 2: Convert to fraction form
    5,673.70/7,830.56 = 4,085.61/x
  3. Step 3: Cross multiply
    5,673.70x = 7,830.56 × 4,085.61
  4. Step 4: Simplify right side
    5,673.70x = 31,992,614.24
  5. Step 5: Solve for x
    x = 31,992,614.24/5,673.70
  6. Step 6: Final answer
    x = 5,638.76

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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.