Home / 8,420.67-12,626.82-4,911.93

Finding the Fourth Proportional to 8,420.67, 12,626.82 and 4,911.93

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Solution

The fourth proportional to 8,420.67, 12,626.82 and 4,911.93 is: 7,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.67 : 12,626.82 = 4,911.93 : x
  2. Step 2: Convert to fraction form
    8,420.67/12,626.82 = 4,911.93/x
  3. Step 3: Cross multiply
    8,420.67x = 12,626.82 × 4,911.93
  4. Step 4: Simplify right side
    8,420.67x = 62,022,055.96
  5. Step 5: Solve for x
    x = 62,022,055.96/8,420.67
  6. Step 6: Final answer
    x = 7,365.45

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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.