Home / 3,425.10-5,138.40-1,345.10

Finding the Fourth Proportional to 3,425.10, 5,138.40 and 1,345.10

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Solution

The fourth proportional to 3,425.10, 5,138.40 and 1,345.10 is: 2,017.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.10 : 5,138.40 = 1,345.10 : x
  2. Step 2: Convert to fraction form
    3,425.10/5,138.40 = 1,345.10/x
  3. Step 3: Cross multiply
    3,425.10x = 5,138.40 × 1,345.10
  4. Step 4: Simplify right side
    3,425.10x = 6,911,661.84
  5. Step 5: Solve for x
    x = 6,911,661.84/3,425.10
  6. Step 6: Final answer
    x = 2,017.94

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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.