Home / 7,222.80-9,963.48-4,237.20

Finding the Fourth Proportional to 7,222.80, 9,963.48 and 4,237.20

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Solution

The fourth proportional to 7,222.80, 9,963.48 and 4,237.20 is: 5,845.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.80 : 9,963.48 = 4,237.20 : x
  2. Step 2: Convert to fraction form
    7,222.80/9,963.48 = 4,237.20/x
  3. Step 3: Cross multiply
    7,222.80x = 9,963.48 × 4,237.20
  4. Step 4: Simplify right side
    7,222.80x = 42,217,257.46
  5. Step 5: Solve for x
    x = 42,217,257.46/7,222.80
  6. Step 6: Final answer
    x = 5,845.00

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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.