Home / 4,742.88-7,114.31-1,280.13

Finding the Fourth Proportional to 4,742.88, 7,114.31 and 1,280.13

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Solution

The fourth proportional to 4,742.88, 7,114.31 and 1,280.13 is: 1,920.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.88 : 7,114.31 = 1,280.13 : x
  2. Step 2: Convert to fraction form
    4,742.88/7,114.31 = 1,280.13/x
  3. Step 3: Cross multiply
    4,742.88x = 7,114.31 × 1,280.13
  4. Step 4: Simplify right side
    4,742.88x = 9,107,241.66
  5. Step 5: Solve for x
    x = 9,107,241.66/4,742.88
  6. Step 6: Final answer
    x = 1,920.19

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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.