Home / 7,924.40-10,932.24-4,778.80

Finding the Fourth Proportional to 7,924.40, 10,932.24 and 4,778.80

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Solution

The fourth proportional to 7,924.40, 10,932.24 and 4,778.80 is: 6,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.40 : 10,932.24 = 4,778.80 : x
  2. Step 2: Convert to fraction form
    7,924.40/10,932.24 = 4,778.80/x
  3. Step 3: Cross multiply
    7,924.40x = 10,932.24 × 4,778.80
  4. Step 4: Simplify right side
    7,924.40x = 52,242,988.51
  5. Step 5: Solve for x
    x = 52,242,988.51/7,924.40
  6. Step 6: Final answer
    x = 6,592.67

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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.