Home / 5,428.36-7,488.54-3,159.70

Finding the Fourth Proportional to 5,428.36, 7,488.54 and 3,159.70

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Solution

The fourth proportional to 5,428.36, 7,488.54 and 3,159.70 is: 4,358.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.36 : 7,488.54 = 3,159.70 : x
  2. Step 2: Convert to fraction form
    5,428.36/7,488.54 = 3,159.70/x
  3. Step 3: Cross multiply
    5,428.36x = 7,488.54 × 3,159.70
  4. Step 4: Simplify right side
    5,428.36x = 23,661,539.84
  5. Step 5: Solve for x
    x = 23,661,539.84/5,428.36
  6. Step 6: Final answer
    x = 4,358.87

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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.