Home / 3,117.80-4,680.30-1,886.60

Finding the Fourth Proportional to 3,117.80, 4,680.30 and 1,886.60

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Solution

The fourth proportional to 3,117.80, 4,680.30 and 1,886.60 is: 2,832.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.80 : 4,680.30 = 1,886.60 : x
  2. Step 2: Convert to fraction form
    3,117.80/4,680.30 = 1,886.60/x
  3. Step 3: Cross multiply
    3,117.80x = 4,680.30 × 1,886.60
  4. Step 4: Simplify right side
    3,117.80x = 8,829,853.98
  5. Step 5: Solve for x
    x = 8,829,853.98/3,117.80
  6. Step 6: Final answer
    x = 2,832.08

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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.