Home / 3,405.96-5,108.76-1,325.88

Finding the Fourth Proportional to 3,405.96, 5,108.76 and 1,325.88

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Solution

The fourth proportional to 3,405.96, 5,108.76 and 1,325.88 is: 1,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.96 : 5,108.76 = 1,325.88 : x
  2. Step 2: Convert to fraction form
    3,405.96/5,108.76 = 1,325.88/x
  3. Step 3: Cross multiply
    3,405.96x = 5,108.76 × 1,325.88
  4. Step 4: Simplify right side
    3,405.96x = 6,773,602.71
  5. Step 5: Solve for x
    x = 6,773,602.71/3,405.96
  6. Step 6: Final answer
    x = 1,988.75

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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.