Home / 6,888.72-10,327.62-2,990.40

Finding the Fourth Proportional to 6,888.72, 10,327.62 and 2,990.40

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Solution

The fourth proportional to 6,888.72, 10,327.62 and 2,990.40 is: 4,483.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,888.72 : 10,327.62 = 2,990.40 : x
  2. Step 2: Convert to fraction form
    6,888.72/10,327.62 = 2,990.40/x
  3. Step 3: Cross multiply
    6,888.72x = 10,327.62 × 2,990.40
  4. Step 4: Simplify right side
    6,888.72x = 30,883,714.85
  5. Step 5: Solve for x
    x = 30,883,714.85/6,888.72
  6. Step 6: Final answer
    x = 4,483.23

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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.