Home / 5,238.24-7,222.08-3,980.64

Finding the Fourth Proportional to 5,238.24, 7,222.08 and 3,980.64

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Solution

The fourth proportional to 5,238.24, 7,222.08 and 3,980.64 is: 5,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.24 : 7,222.08 = 3,980.64 : x
  2. Step 2: Convert to fraction form
    5,238.24/7,222.08 = 3,980.64/x
  3. Step 3: Cross multiply
    5,238.24x = 7,222.08 × 3,980.64
  4. Step 4: Simplify right side
    5,238.24x = 28,748,500.53
  5. Step 5: Solve for x
    x = 28,748,500.53/5,238.24
  6. Step 6: Final answer
    x = 5,488.20

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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.