Home / 3,129.28-4,323.04-2,656.38

Finding the Fourth Proportional to 3,129.28, 4,323.04 and 2,656.38

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Solution

The fourth proportional to 3,129.28, 4,323.04 and 2,656.38 is: 3,669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.28 : 4,323.04 = 2,656.38 : x
  2. Step 2: Convert to fraction form
    3,129.28/4,323.04 = 2,656.38/x
  3. Step 3: Cross multiply
    3,129.28x = 4,323.04 × 2,656.38
  4. Step 4: Simplify right side
    3,129.28x = 11,483,637.00
  5. Step 5: Solve for x
    x = 11,483,637.00/3,129.28
  6. Step 6: Final answer
    x = 3,669.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.