Home / 5,230.04-7,215.60-2,990.28

Finding the Fourth Proportional to 5,230.04, 7,215.60 and 2,990.28

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Solution

The fourth proportional to 5,230.04, 7,215.60 and 2,990.28 is: 4,125.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.04 : 7,215.60 = 2,990.28 : x
  2. Step 2: Convert to fraction form
    5,230.04/7,215.60 = 2,990.28/x
  3. Step 3: Cross multiply
    5,230.04x = 7,215.60 × 2,990.28
  4. Step 4: Simplify right side
    5,230.04x = 21,576,664.37
  5. Step 5: Solve for x
    x = 21,576,664.37/5,230.04
  6. Step 6: Final answer
    x = 4,125.53

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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.