Home / 5,428.69-7,491.62-3,071.32

Finding the Fourth Proportional to 5,428.69, 7,491.62 and 3,071.32

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Solution

The fourth proportional to 5,428.69, 7,491.62 and 3,071.32 is: 4,238.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.69 : 7,491.62 = 3,071.32 : x
  2. Step 2: Convert to fraction form
    5,428.69/7,491.62 = 3,071.32/x
  3. Step 3: Cross multiply
    5,428.69x = 7,491.62 × 3,071.32
  4. Step 4: Simplify right side
    5,428.69x = 23,009,151.29
  5. Step 5: Solve for x
    x = 23,009,151.29/5,428.69
  6. Step 6: Final answer
    x = 4,238.44

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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.