Home / 7,090.90-10,636.45-2,930.45

Finding the Fourth Proportional to 7,090.90, 10,636.45 and 2,930.45

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Solution

The fourth proportional to 7,090.90, 10,636.45 and 2,930.45 is: 4,395.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.90 : 10,636.45 = 2,930.45 : x
  2. Step 2: Convert to fraction form
    7,090.90/10,636.45 = 2,930.45/x
  3. Step 3: Cross multiply
    7,090.90x = 10,636.45 × 2,930.45
  4. Step 4: Simplify right side
    7,090.90x = 31,169,524.39
  5. Step 5: Solve for x
    x = 31,169,524.39/7,090.90
  6. Step 6: Final answer
    x = 4,395.71

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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.