Home / 5,230.23-7,215.95-2,990.51

Finding the Fourth Proportional to 5,230.23, 7,215.95 and 2,990.51

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Solution

The fourth proportional to 5,230.23, 7,215.95 and 2,990.51 is: 4,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.23 : 7,215.95 = 2,990.51 : x
  2. Step 2: Convert to fraction form
    5,230.23/7,215.95 = 2,990.51/x
  3. Step 3: Cross multiply
    5,230.23x = 7,215.95 × 2,990.51
  4. Step 4: Simplify right side
    5,230.23x = 21,579,380.97
  5. Step 5: Solve for x
    x = 21,579,380.97/5,230.23
  6. Step 6: Final answer
    x = 4,125.90

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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.