Home / 6,138.32-9,207.70-1,977.78

Finding the Fourth Proportional to 6,138.32, 9,207.70 and 1,977.78

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Solution

The fourth proportional to 6,138.32, 9,207.70 and 1,977.78 is: 2,966.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.32 : 9,207.70 = 1,977.78 : x
  2. Step 2: Convert to fraction form
    6,138.32/9,207.70 = 1,977.78/x
  3. Step 3: Cross multiply
    6,138.32x = 9,207.70 × 1,977.78
  4. Step 4: Simplify right side
    6,138.32x = 18,210,804.91
  5. Step 5: Solve for x
    x = 18,210,804.91/6,138.32
  6. Step 6: Final answer
    x = 2,966.74

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Similar ratio
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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.