Home / 5,287.10-7,930.78-1,777.23

Finding the Fourth Proportional to 5,287.10, 7,930.78 and 1,777.23

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Solution

The fourth proportional to 5,287.10, 7,930.78 and 1,777.23 is: 2,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.10 : 7,930.78 = 1,777.23 : x
  2. Step 2: Convert to fraction form
    5,287.10/7,930.78 = 1,777.23/x
  3. Step 3: Cross multiply
    5,287.10x = 7,930.78 × 1,777.23
  4. Step 4: Simplify right side
    5,287.10x = 14,094,815.70
  5. Step 5: Solve for x
    x = 14,094,815.70/5,287.10
  6. Step 6: Final answer
    x = 2,665.89

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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.