Home / 7,789.86-10,746.46-4,644.90

Finding the Fourth Proportional to 7,789.86, 10,746.46 and 4,644.90

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Solution

The fourth proportional to 7,789.86, 10,746.46 and 4,644.90 is: 6,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.86 : 10,746.46 = 4,644.90 : x
  2. Step 2: Convert to fraction form
    7,789.86/10,746.46 = 4,644.90/x
  3. Step 3: Cross multiply
    7,789.86x = 10,746.46 × 4,644.90
  4. Step 4: Simplify right side
    7,789.86x = 49,916,232.05
  5. Step 5: Solve for x
    x = 49,916,232.05/7,789.86
  6. Step 6: Final answer
    x = 6,407.85

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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.