Home / 7,229.81-9,985.34-4,867.85

Finding the Fourth Proportional to 7,229.81, 9,985.34 and 4,867.85

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Solution

The fourth proportional to 7,229.81, 9,985.34 and 4,867.85 is: 6,723.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229.81 : 9,985.34 = 4,867.85 : x
  2. Step 2: Convert to fraction form
    7,229.81/9,985.34 = 4,867.85/x
  3. Step 3: Cross multiply
    7,229.81x = 9,985.34 × 4,867.85
  4. Step 4: Simplify right side
    7,229.81x = 48,607,174.45
  5. Step 5: Solve for x
    x = 48,607,174.45/7,229.81
  6. Step 6: Final answer
    x = 6,723.16

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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.