Home / 8,400.90-11,579.58-6,716.94

Finding the Fourth Proportional to 8,400.90, 11,579.58 and 6,716.94

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Solution

The fourth proportional to 8,400.90, 11,579.58 and 6,716.94 is: 9,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.90 : 11,579.58 = 6,716.94 : x
  2. Step 2: Convert to fraction form
    8,400.90/11,579.58 = 6,716.94/x
  3. Step 3: Cross multiply
    8,400.90x = 11,579.58 × 6,716.94
  4. Step 4: Simplify right side
    8,400.90x = 77,779,344.09
  5. Step 5: Solve for x
    x = 77,779,344.09/8,400.90
  6. Step 6: Final answer
    x = 9,258.45

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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.