Home / 7,621.51-11,434.31-3,921.72

Finding the Fourth Proportional to 7,621.51, 11,434.31 and 3,921.72

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Solution

The fourth proportional to 7,621.51, 11,434.31 and 3,921.72 is: 5,883.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.51 : 11,434.31 = 3,921.72 : x
  2. Step 2: Convert to fraction form
    7,621.51/11,434.31 = 3,921.72/x
  3. Step 3: Cross multiply
    7,621.51x = 11,434.31 × 3,921.72
  4. Step 4: Simplify right side
    7,621.51x = 44,842,111.67
  5. Step 5: Solve for x
    x = 44,842,111.67/7,621.51
  6. Step 6: Final answer
    x = 5,883.63

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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.