Home / 4,159.10-6,239.83-1,387.58

Finding the Fourth Proportional to 4,159.10, 6,239.83 and 1,387.58

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Solution

The fourth proportional to 4,159.10, 6,239.83 and 1,387.58 is: 2,081.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,159.10 : 6,239.83 = 1,387.58 : x
  2. Step 2: Convert to fraction form
    4,159.10/6,239.83 = 1,387.58/x
  3. Step 3: Cross multiply
    4,159.10x = 6,239.83 × 1,387.58
  4. Step 4: Simplify right side
    4,159.10x = 8,658,275.44
  5. Step 5: Solve for x
    x = 8,658,275.44/4,159.10
  6. Step 6: Final answer
    x = 2,081.77

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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.