Home / 8,270.40-12,422.07-4,945.08

Finding the Fourth Proportional to 8,270.40, 12,422.07 and 4,945.08

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Solution

The fourth proportional to 8,270.40, 12,422.07 and 4,945.08 is: 7,427.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.40 : 12,422.07 = 4,945.08 : x
  2. Step 2: Convert to fraction form
    8,270.40/12,422.07 = 4,945.08/x
  3. Step 3: Cross multiply
    8,270.40x = 12,422.07 × 4,945.08
  4. Step 4: Simplify right side
    8,270.40x = 61,428,129.92
  5. Step 5: Solve for x
    x = 61,428,129.92/8,270.40
  6. Step 6: Final answer
    x = 7,427.47

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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.