Home / 5,628.36-7,767.63-3,390.24

Finding the Fourth Proportional to 5,628.36, 7,767.63 and 3,390.24

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Solution

The fourth proportional to 5,628.36, 7,767.63 and 3,390.24 is: 4,678.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.36 : 7,767.63 = 3,390.24 : x
  2. Step 2: Convert to fraction form
    5,628.36/7,767.63 = 3,390.24/x
  3. Step 3: Cross multiply
    5,628.36x = 7,767.63 × 3,390.24
  4. Step 4: Simplify right side
    5,628.36x = 26,334,129.93
  5. Step 5: Solve for x
    x = 26,334,129.93/5,628.36
  6. Step 6: Final answer
    x = 4,678.83

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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.