Home / 5,228.52-7,215.96-2,990.70

Finding the Fourth Proportional to 5,228.52, 7,215.96 and 2,990.70

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Solution

The fourth proportional to 5,228.52, 7,215.96 and 2,990.70 is: 4,127.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.52 : 7,215.96 = 2,990.70 : x
  2. Step 2: Convert to fraction form
    5,228.52/7,215.96 = 2,990.70/x
  3. Step 3: Cross multiply
    5,228.52x = 7,215.96 × 2,990.70
  4. Step 4: Simplify right side
    5,228.52x = 21,580,771.57
  5. Step 5: Solve for x
    x = 21,580,771.57/5,228.52
  6. Step 6: Final answer
    x = 4,127.51

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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.