Home / 5,428.89-7,491.87-3,070.98

Finding the Fourth Proportional to 5,428.89, 7,491.87 and 3,070.98

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Solution

The fourth proportional to 5,428.89, 7,491.87 and 3,070.98 is: 4,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.89 : 7,491.87 = 3,070.98 : x
  2. Step 2: Convert to fraction form
    5,428.89/7,491.87 = 3,070.98/x
  3. Step 3: Cross multiply
    5,428.89x = 7,491.87 × 3,070.98
  4. Step 4: Simplify right side
    5,428.89x = 23,007,382.93
  5. Step 5: Solve for x
    x = 23,007,382.93/5,428.89
  6. Step 6: Final answer
    x = 4,237.95

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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.