Home / 5,119.58-7,677.94-1,420.93

Finding the Fourth Proportional to 5,119.58, 7,677.94 and 1,420.93

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Solution

The fourth proportional to 5,119.58, 7,677.94 and 1,420.93 is: 2,130.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.58 : 7,677.94 = 1,420.93 : x
  2. Step 2: Convert to fraction form
    5,119.58/7,677.94 = 1,420.93/x
  3. Step 3: Cross multiply
    5,119.58x = 7,677.94 × 1,420.93
  4. Step 4: Simplify right side
    5,119.58x = 10,909,792.54
  5. Step 5: Solve for x
    x = 10,909,792.54/5,119.58
  6. Step 6: Final answer
    x = 2,130.99

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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.