Home / 8,005.16-11,052.42-5,215.40

Finding the Fourth Proportional to 8,005.16, 11,052.42 and 5,215.40

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Solution

The fourth proportional to 8,005.16, 11,052.42 and 5,215.40 is: 7,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.16 : 11,052.42 = 5,215.40 : x
  2. Step 2: Convert to fraction form
    8,005.16/11,052.42 = 5,215.40/x
  3. Step 3: Cross multiply
    8,005.16x = 11,052.42 × 5,215.40
  4. Step 4: Simplify right side
    8,005.16x = 57,642,791.27
  5. Step 5: Solve for x
    x = 57,642,791.27/8,005.16
  6. Step 6: Final answer
    x = 7,200.70

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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.