Home / 5,090.12-7,636.28-1,580.05

Finding the Fourth Proportional to 5,090.12, 7,636.28 and 1,580.05

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Solution

The fourth proportional to 5,090.12, 7,636.28 and 1,580.05 is: 2,370.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.12 : 7,636.28 = 1,580.05 : x
  2. Step 2: Convert to fraction form
    5,090.12/7,636.28 = 1,580.05/x
  3. Step 3: Cross multiply
    5,090.12x = 7,636.28 × 1,580.05
  4. Step 4: Simplify right side
    5,090.12x = 12,065,704.21
  5. Step 5: Solve for x
    x = 12,065,704.21/5,090.12
  6. Step 6: Final answer
    x = 2,370.42

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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.