Home / 8,438.48-11,643.66-5,416.28

Finding the Fourth Proportional to 8,438.48, 11,643.66 and 5,416.28

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Solution

The fourth proportional to 8,438.48, 11,643.66 and 5,416.28 is: 7,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.48 : 11,643.66 = 5,416.28 : x
  2. Step 2: Convert to fraction form
    8,438.48/11,643.66 = 5,416.28/x
  3. Step 3: Cross multiply
    8,438.48x = 11,643.66 × 5,416.28
  4. Step 4: Simplify right side
    8,438.48x = 63,065,322.78
  5. Step 5: Solve for x
    x = 63,065,322.78/8,438.48
  6. Step 6: Final answer
    x = 7,473.54

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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.