Home / 5,279.84-7,284.12-3,391.17

Finding the Fourth Proportional to 5,279.84, 7,284.12 and 3,391.17

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Solution

The fourth proportional to 5,279.84, 7,284.12 and 3,391.17 is: 4,678.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.84 : 7,284.12 = 3,391.17 : x
  2. Step 2: Convert to fraction form
    5,279.84/7,284.12 = 3,391.17/x
  3. Step 3: Cross multiply
    5,279.84x = 7,284.12 × 3,391.17
  4. Step 4: Simplify right side
    5,279.84x = 24,701,649.19
  5. Step 5: Solve for x
    x = 24,701,649.19/5,279.84
  6. Step 6: Final answer
    x = 4,678.48

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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.