Home / 10,091.40-13,920.90-5,897.22

Finding the Fourth Proportional to 10,091.40, 13,920.90 and 5,897.22

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Solution

The fourth proportional to 10,091.40, 13,920.90 and 5,897.22 is: 8,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.40 : 13,920.90 = 5,897.22 : x
  2. Step 2: Convert to fraction form
    10,091.40/13,920.90 = 5,897.22/x
  3. Step 3: Cross multiply
    10,091.40x = 13,920.90 × 5,897.22
  4. Step 4: Simplify right side
    10,091.40x = 82,094,609.90
  5. Step 5: Solve for x
    x = 82,094,609.90/10,091.40
  6. Step 6: Final answer
    x = 8,135.11

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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.