Home / 7,206.85-10,738.63-6,420.81

Finding the Fourth Proportional to 7,206.85, 10,738.63 and 6,420.81

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Solution

The fourth proportional to 7,206.85, 10,738.63 and 6,420.81 is: 9,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,206.85 : 10,738.63 = 6,420.81 : x
  2. Step 2: Convert to fraction form
    7,206.85/10,738.63 = 6,420.81/x
  3. Step 3: Cross multiply
    7,206.85x = 10,738.63 × 6,420.81
  4. Step 4: Simplify right side
    7,206.85x = 68,950,702.89
  5. Step 5: Solve for x
    x = 68,950,702.89/7,206.85
  6. Step 6: Final answer
    x = 9,567.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.