Home / 7,479.36-10,321.52-4,122.17

Finding the Fourth Proportional to 7,479.36, 10,321.52 and 4,122.17

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Solution

The fourth proportional to 7,479.36, 10,321.52 and 4,122.17 is: 5,688.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.36 : 10,321.52 = 4,122.17 : x
  2. Step 2: Convert to fraction form
    7,479.36/10,321.52 = 4,122.17/x
  3. Step 3: Cross multiply
    7,479.36x = 10,321.52 × 4,122.17
  4. Step 4: Simplify right side
    7,479.36x = 42,546,987.88
  5. Step 5: Solve for x
    x = 42,546,987.88/7,479.36
  6. Step 6: Final answer
    x = 5,688.59

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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.