Home / 8,429.87-11,630.79-5,447.45

Finding the Fourth Proportional to 8,429.87, 11,630.79 and 5,447.45

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Solution

The fourth proportional to 8,429.87, 11,630.79 and 5,447.45 is: 7,515.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.87 : 11,630.79 = 5,447.45 : x
  2. Step 2: Convert to fraction form
    8,429.87/11,630.79 = 5,447.45/x
  3. Step 3: Cross multiply
    8,429.87x = 11,630.79 × 5,447.45
  4. Step 4: Simplify right side
    8,429.87x = 63,358,176.06
  5. Step 5: Solve for x
    x = 63,358,176.06/8,429.87
  6. Step 6: Final answer
    x = 7,515.91

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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.