Home / 5,207.32-7,810.99-1,311.70

Finding the Fourth Proportional to 5,207.32, 7,810.99 and 1,311.70

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Solution

The fourth proportional to 5,207.32, 7,810.99 and 1,311.70 is: 1,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.32 : 7,810.99 = 1,311.70 : x
  2. Step 2: Convert to fraction form
    5,207.32/7,810.99 = 1,311.70/x
  3. Step 3: Cross multiply
    5,207.32x = 7,810.99 × 1,311.70
  4. Step 4: Simplify right side
    5,207.32x = 10,245,675.58
  5. Step 5: Solve for x
    x = 10,245,675.58/5,207.32
  6. Step 6: Final answer
    x = 1,967.55

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Similar ratio
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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.