Home / 8,911.07-13,387.39-5,215.91

Finding the Fourth Proportional to 8,911.07, 13,387.39 and 5,215.91

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Solution

The fourth proportional to 8,911.07, 13,387.39 and 5,215.91 is: 7,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.07 : 13,387.39 = 5,215.91 : x
  2. Step 2: Convert to fraction form
    8,911.07/13,387.39 = 5,215.91/x
  3. Step 3: Cross multiply
    8,911.07x = 13,387.39 × 5,215.91
  4. Step 4: Simplify right side
    8,911.07x = 69,827,441.80
  5. Step 5: Solve for x
    x = 69,827,441.80/8,911.07
  6. Step 6: Final answer
    x = 7,836.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.