Home / 8,428.11-11,628.71-5,153.03

Finding the Fourth Proportional to 8,428.11, 11,628.71 and 5,153.03

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Solution

The fourth proportional to 8,428.11, 11,628.71 and 5,153.03 is: 7,109.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.11 : 11,628.71 = 5,153.03 : x
  2. Step 2: Convert to fraction form
    8,428.11/11,628.71 = 5,153.03/x
  3. Step 3: Cross multiply
    8,428.11x = 11,628.71 × 5,153.03
  4. Step 4: Simplify right side
    8,428.11x = 59,923,070.51
  5. Step 5: Solve for x
    x = 59,923,070.51/8,428.11
  6. Step 6: Final answer
    x = 7,109.91

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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.