Home / 4,913.06-6,780.26-2,817.20

Finding the Fourth Proportional to 4,913.06, 6,780.26 and 2,817.20

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Solution

The fourth proportional to 4,913.06, 6,780.26 and 2,817.20 is: 3,887.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.06 : 6,780.26 = 2,817.20 : x
  2. Step 2: Convert to fraction form
    4,913.06/6,780.26 = 2,817.20/x
  3. Step 3: Cross multiply
    4,913.06x = 6,780.26 × 2,817.20
  4. Step 4: Simplify right side
    4,913.06x = 19,101,348.47
  5. Step 5: Solve for x
    x = 19,101,348.47/4,913.06
  6. Step 6: Final answer
    x = 3,887.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.