Home / 6,780.96-9,364.14-4,428.72

Finding the Fourth Proportional to 6,780.96, 9,364.14 and 4,428.72

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Solution

The fourth proportional to 6,780.96, 9,364.14 and 4,428.72 is: 6,115.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.96 : 9,364.14 = 4,428.72 : x
  2. Step 2: Convert to fraction form
    6,780.96/9,364.14 = 4,428.72/x
  3. Step 3: Cross multiply
    6,780.96x = 9,364.14 × 4,428.72
  4. Step 4: Simplify right side
    6,780.96x = 41,471,154.10
  5. Step 5: Solve for x
    x = 41,471,154.10/6,780.96
  6. Step 6: Final answer
    x = 6,115.82

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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.