Home / 3,423.51-5,134.86-1,345.05

Finding the Fourth Proportional to 3,423.51, 5,134.86 and 1,345.05

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Solution

The fourth proportional to 3,423.51, 5,134.86 and 1,345.05 is: 2,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.51 : 5,134.86 = 1,345.05 : x
  2. Step 2: Convert to fraction form
    3,423.51/5,134.86 = 1,345.05/x
  3. Step 3: Cross multiply
    3,423.51x = 5,134.86 × 1,345.05
  4. Step 4: Simplify right side
    3,423.51x = 6,906,643.44
  5. Step 5: Solve for x
    x = 6,906,643.44/3,423.51
  6. Step 6: Final answer
    x = 2,017.42

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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.