Home / 8,269.86-11,420.62-5,439.06

Finding the Fourth Proportional to 8,269.86, 11,420.62 and 5,439.06

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Solution

The fourth proportional to 8,269.86, 11,420.62 and 5,439.06 is: 7,511.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.86 : 11,420.62 = 5,439.06 : x
  2. Step 2: Convert to fraction form
    8,269.86/11,420.62 = 5,439.06/x
  3. Step 3: Cross multiply
    8,269.86x = 11,420.62 × 5,439.06
  4. Step 4: Simplify right side
    8,269.86x = 62,117,437.42
  5. Step 5: Solve for x
    x = 62,117,437.42/8,269.86
  6. Step 6: Final answer
    x = 7,511.30

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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.