Home / 8,390.22-11,570.85-7,270.62

Finding the Fourth Proportional to 8,390.22, 11,570.85 and 7,270.62

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Solution

The fourth proportional to 8,390.22, 11,570.85 and 7,270.62 is: 10,026.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.22 : 11,570.85 = 7,270.62 : x
  2. Step 2: Convert to fraction form
    8,390.22/11,570.85 = 7,270.62/x
  3. Step 3: Cross multiply
    8,390.22x = 11,570.85 × 7,270.62
  4. Step 4: Simplify right side
    8,390.22x = 84,127,253.43
  5. Step 5: Solve for x
    x = 84,127,253.43/8,390.22
  6. Step 6: Final answer
    x = 10,026.82

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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.