Home / 3,117.80-4,676.70-1,951.40

Finding the Fourth Proportional to 3,117.80, 4,676.70 and 1,951.40

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Solution

The fourth proportional to 3,117.80, 4,676.70 and 1,951.40 is: 2,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.80 : 4,676.70 = 1,951.40 : x
  2. Step 2: Convert to fraction form
    3,117.80/4,676.70 = 1,951.40/x
  3. Step 3: Cross multiply
    3,117.80x = 4,676.70 × 1,951.40
  4. Step 4: Simplify right side
    3,117.80x = 9,126,112.38
  5. Step 5: Solve for x
    x = 9,126,112.38/3,117.80
  6. Step 6: Final answer
    x = 2,927.10

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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.