Home / 5,259.70-7,256.59-2,990.81

Finding the Fourth Proportional to 5,259.70, 7,256.59 and 2,990.81

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Solution

The fourth proportional to 5,259.70, 7,256.59 and 2,990.81 is: 4,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,259.70 : 7,256.59 = 2,990.81 : x
  2. Step 2: Convert to fraction form
    5,259.70/7,256.59 = 2,990.81/x
  3. Step 3: Cross multiply
    5,259.70x = 7,256.59 × 2,990.81
  4. Step 4: Simplify right side
    5,259.70x = 21,703,092.60
  5. Step 5: Solve for x
    x = 21,703,092.60/5,259.70
  6. Step 6: Final answer
    x = 4,126.30

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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.