Home / 4,990.43-7,485.51-4,331.25

Finding the Fourth Proportional to 4,990.43, 7,485.51 and 4,331.25

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Solution

The fourth proportional to 4,990.43, 7,485.51 and 4,331.25 is: 6,496.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.43 : 7,485.51 = 4,331.25 : x
  2. Step 2: Convert to fraction form
    4,990.43/7,485.51 = 4,331.25/x
  3. Step 3: Cross multiply
    4,990.43x = 7,485.51 × 4,331.25
  4. Step 4: Simplify right side
    4,990.43x = 32,421,615.19
  5. Step 5: Solve for x
    x = 32,421,615.19/4,990.43
  6. Step 6: Final answer
    x = 6,496.76

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.