Home / 5,403.36-7,456.10-3,987.81

Finding the Fourth Proportional to 5,403.36, 7,456.10 and 3,987.81

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Solution

The fourth proportional to 5,403.36, 7,456.10 and 3,987.81 is: 5,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.36 : 7,456.10 = 3,987.81 : x
  2. Step 2: Convert to fraction form
    5,403.36/7,456.10 = 3,987.81/x
  3. Step 3: Cross multiply
    5,403.36x = 7,456.10 × 3,987.81
  4. Step 4: Simplify right side
    5,403.36x = 29,733,491.66
  5. Step 5: Solve for x
    x = 29,733,491.66/5,403.36
  6. Step 6: Final answer
    x = 5,502.78

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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.