Home / 6,722.45-10,085.70-4,778.45

Finding the Fourth Proportional to 6,722.45, 10,085.70 and 4,778.45

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Solution

The fourth proportional to 6,722.45, 10,085.70 and 4,778.45 is: 7,169.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,722.45 : 10,085.70 = 4,778.45 : x
  2. Step 2: Convert to fraction form
    6,722.45/10,085.70 = 4,778.45/x
  3. Step 3: Cross multiply
    6,722.45x = 10,085.70 × 4,778.45
  4. Step 4: Simplify right side
    6,722.45x = 48,194,013.17
  5. Step 5: Solve for x
    x = 48,194,013.17/6,722.45
  6. Step 6: Final answer
    x = 7,169.11

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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.