Home / 5,230.49-7,218.06-2,840.45

Finding the Fourth Proportional to 5,230.49, 7,218.06 and 2,840.45

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Solution

The fourth proportional to 5,230.49, 7,218.06 and 2,840.45 is: 3,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.49 : 7,218.06 = 2,840.45 : x
  2. Step 2: Convert to fraction form
    5,230.49/7,218.06 = 2,840.45/x
  3. Step 3: Cross multiply
    5,230.49x = 7,218.06 × 2,840.45
  4. Step 4: Simplify right side
    5,230.49x = 20,502,500.02
  5. Step 5: Solve for x
    x = 20,502,500.02/5,230.49
  6. Step 6: Final answer
    x = 3,919.80

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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.