Home / 6,440.72-8,888.31-3,608.07

Finding the Fourth Proportional to 6,440.72, 8,888.31 and 3,608.07

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Solution

The fourth proportional to 6,440.72, 8,888.31 and 3,608.07 is: 4,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.72 : 8,888.31 = 3,608.07 : x
  2. Step 2: Convert to fraction form
    6,440.72/8,888.31 = 3,608.07/x
  3. Step 3: Cross multiply
    6,440.72x = 8,888.31 × 3,608.07
  4. Step 4: Simplify right side
    6,440.72x = 32,069,644.66
  5. Step 5: Solve for x
    x = 32,069,644.66/6,440.72
  6. Step 6: Final answer
    x = 4,979.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.