Home / 5,207.22-7,810.76-1,311.63

Finding the Fourth Proportional to 5,207.22, 7,810.76 and 1,311.63

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Solution

The fourth proportional to 5,207.22, 7,810.76 and 1,311.63 is: 1,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.22 : 7,810.76 = 1,311.63 : x
  2. Step 2: Convert to fraction form
    5,207.22/7,810.76 = 1,311.63/x
  3. Step 3: Cross multiply
    5,207.22x = 7,810.76 × 1,311.63
  4. Step 4: Simplify right side
    5,207.22x = 10,244,801.13
  5. Step 5: Solve for x
    x = 10,244,801.13/5,207.22
  6. Step 6: Final answer
    x = 1,967.42

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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.