Home / 5,215.28-7,829.76-3,110.76

Finding the Fourth Proportional to 5,215.28, 7,829.76 and 3,110.76

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Solution

The fourth proportional to 5,215.28, 7,829.76 and 3,110.76 is: 4,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.28 : 7,829.76 = 3,110.76 : x
  2. Step 2: Convert to fraction form
    5,215.28/7,829.76 = 3,110.76/x
  3. Step 3: Cross multiply
    5,215.28x = 7,829.76 × 3,110.76
  4. Step 4: Simplify right side
    5,215.28x = 24,356,504.22
  5. Step 5: Solve for x
    x = 24,356,504.22/5,215.28
  6. Step 6: Final answer
    x = 4,670.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.