Home / 7,479.55-10,321.63-4,122.28

Finding the Fourth Proportional to 7,479.55, 10,321.63 and 4,122.28

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Solution

The fourth proportional to 7,479.55, 10,321.63 and 4,122.28 is: 5,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.55 : 10,321.63 = 4,122.28 : x
  2. Step 2: Convert to fraction form
    7,479.55/10,321.63 = 4,122.28/x
  3. Step 3: Cross multiply
    7,479.55x = 10,321.63 × 4,122.28
  4. Step 4: Simplify right side
    7,479.55x = 42,548,648.92
  5. Step 5: Solve for x
    x = 42,548,648.92/7,479.55
  6. Step 6: Final answer
    x = 5,688.66

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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.