Home / 4,160.39-6,239.45-1,387.15

Finding the Fourth Proportional to 4,160.39, 6,239.45 and 1,387.15

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Solution

The fourth proportional to 4,160.39, 6,239.45 and 1,387.15 is: 2,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,160.39 : 6,239.45 = 1,387.15 : x
  2. Step 2: Convert to fraction form
    4,160.39/6,239.45 = 1,387.15/x
  3. Step 3: Cross multiply
    4,160.39x = 6,239.45 × 1,387.15
  4. Step 4: Simplify right side
    4,160.39x = 8,655,040.94
  5. Step 5: Solve for x
    x = 8,655,040.94/4,160.39
  6. Step 6: Final answer
    x = 2,080.35

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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.