Home / 7,977.48-11,008.76-4,620.90

Finding the Fourth Proportional to 7,977.48, 11,008.76 and 4,620.90

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Solution

The fourth proportional to 7,977.48, 11,008.76 and 4,620.90 is: 6,376.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.48 : 11,008.76 = 4,620.90 : x
  2. Step 2: Convert to fraction form
    7,977.48/11,008.76 = 4,620.90/x
  3. Step 3: Cross multiply
    7,977.48x = 11,008.76 × 4,620.90
  4. Step 4: Simplify right side
    7,977.48x = 50,870,355.98
  5. Step 5: Solve for x
    x = 50,870,355.98/7,977.48
  6. Step 6: Final answer
    x = 6,376.75

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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.