Home / 5,228.86-7,215.50-2,870.99

Finding the Fourth Proportional to 5,228.86, 7,215.50 and 2,870.99

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Solution

The fourth proportional to 5,228.86, 7,215.50 and 2,870.99 is: 3,961.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.86 : 7,215.50 = 2,870.99 : x
  2. Step 2: Convert to fraction form
    5,228.86/7,215.50 = 2,870.99/x
  3. Step 3: Cross multiply
    5,228.86x = 7,215.50 × 2,870.99
  4. Step 4: Simplify right side
    5,228.86x = 20,715,628.35
  5. Step 5: Solve for x
    x = 20,715,628.35/5,228.86
  6. Step 6: Final answer
    x = 3,961.79

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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.