Home / 7,964.57-10,991.68-4,778.00

Finding the Fourth Proportional to 7,964.57, 10,991.68 and 4,778.00

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Solution

The fourth proportional to 7,964.57, 10,991.68 and 4,778.00 is: 6,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.57 : 10,991.68 = 4,778.00 : x
  2. Step 2: Convert to fraction form
    7,964.57/10,991.68 = 4,778.00/x
  3. Step 3: Cross multiply
    7,964.57x = 10,991.68 × 4,778.00
  4. Step 4: Simplify right side
    7,964.57x = 52,518,221.36
  5. Step 5: Solve for x
    x = 52,518,221.36/7,964.57
  6. Step 6: Final answer
    x = 6,593.98

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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.