Home / 7,731.20-11,585.70-4,807.80

Finding the Fourth Proportional to 7,731.20, 11,585.70 and 4,807.80

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Solution

The fourth proportional to 7,731.20, 11,585.70 and 4,807.80 is: 7,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,731.20 : 11,585.70 = 4,807.80 : x
  2. Step 2: Convert to fraction form
    7,731.20/11,585.70 = 4,807.80/x
  3. Step 3: Cross multiply
    7,731.20x = 11,585.70 × 4,807.80
  4. Step 4: Simplify right side
    7,731.20x = 55,701,728.46
  5. Step 5: Solve for x
    x = 55,701,728.46/7,731.20
  6. Step 6: Final answer
    x = 7,204.80

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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.