Home / 8,721.90-12,040.68-5,904.17

Finding the Fourth Proportional to 8,721.90, 12,040.68 and 5,904.17

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Solution

The fourth proportional to 8,721.90, 12,040.68 and 5,904.17 is: 8,150.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.90 : 12,040.68 = 5,904.17 : x
  2. Step 2: Convert to fraction form
    8,721.90/12,040.68 = 5,904.17/x
  3. Step 3: Cross multiply
    8,721.90x = 12,040.68 × 5,904.17
  4. Step 4: Simplify right side
    8,721.90x = 71,090,221.64
  5. Step 5: Solve for x
    x = 71,090,221.64/8,721.90
  6. Step 6: Final answer
    x = 8,150.77

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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.