Home / 6,985.70-10,485.44-5,131.61

Finding the Fourth Proportional to 6,985.70, 10,485.44 and 5,131.61

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Solution

The fourth proportional to 6,985.70, 10,485.44 and 5,131.61 is: 7,702.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.70 : 10,485.44 = 5,131.61 : x
  2. Step 2: Convert to fraction form
    6,985.70/10,485.44 = 5,131.61/x
  3. Step 3: Cross multiply
    6,985.70x = 10,485.44 × 5,131.61
  4. Step 4: Simplify right side
    6,985.70x = 53,807,208.56
  5. Step 5: Solve for x
    x = 53,807,208.56/6,985.70
  6. Step 6: Final answer
    x = 7,702.48

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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.