Home / 5,428.62-7,491.78-3,070.98

Finding the Fourth Proportional to 5,428.62, 7,491.78 and 3,070.98

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Solution

The fourth proportional to 5,428.62, 7,491.78 and 3,070.98 is: 4,238.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.62 : 7,491.78 = 3,070.98 : x
  2. Step 2: Convert to fraction form
    5,428.62/7,491.78 = 3,070.98/x
  3. Step 3: Cross multiply
    5,428.62x = 7,491.78 × 3,070.98
  4. Step 4: Simplify right side
    5,428.62x = 23,007,106.54
  5. Step 5: Solve for x
    x = 23,007,106.54/5,428.62
  6. Step 6: Final answer
    x = 4,238.11

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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.