Home / 5,382.12-7,421.70-3,491.52

Finding the Fourth Proportional to 5,382.12, 7,421.70 and 3,491.52

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Solution

The fourth proportional to 5,382.12, 7,421.70 and 3,491.52 is: 4,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.12 : 7,421.70 = 3,491.52 : x
  2. Step 2: Convert to fraction form
    5,382.12/7,421.70 = 3,491.52/x
  3. Step 3: Cross multiply
    5,382.12x = 7,421.70 × 3,491.52
  4. Step 4: Simplify right side
    5,382.12x = 25,913,013.98
  5. Step 5: Solve for x
    x = 25,913,013.98/5,382.12
  6. Step 6: Final answer
    x = 4,814.65

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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.