Home / 7,977.21-11,008.38-4,994.70

Finding the Fourth Proportional to 7,977.21, 11,008.38 and 4,994.70

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Solution

The fourth proportional to 7,977.21, 11,008.38 and 4,994.70 is: 6,892.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.21 : 11,008.38 = 4,994.70 : x
  2. Step 2: Convert to fraction form
    7,977.21/11,008.38 = 4,994.70/x
  3. Step 3: Cross multiply
    7,977.21x = 11,008.38 × 4,994.70
  4. Step 4: Simplify right side
    7,977.21x = 54,983,555.59
  5. Step 5: Solve for x
    x = 54,983,555.59/7,977.21
  6. Step 6: Final answer
    x = 6,892.58

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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.