Home / 3,153.57-4,728.73-1,421.25

Finding the Fourth Proportional to 3,153.57, 4,728.73 and 1,421.25

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Solution

The fourth proportional to 3,153.57, 4,728.73 and 1,421.25 is: 2,131.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.57 : 4,728.73 = 1,421.25 : x
  2. Step 2: Convert to fraction form
    3,153.57/4,728.73 = 1,421.25/x
  3. Step 3: Cross multiply
    3,153.57x = 4,728.73 × 1,421.25
  4. Step 4: Simplify right side
    3,153.57x = 6,720,707.51
  5. Step 5: Solve for x
    x = 6,720,707.51/3,153.57
  6. Step 6: Final answer
    x = 2,131.14

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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.