Home / 2,817.10-4,225.65-1,278.10

Finding the Fourth Proportional to 2,817.10, 4,225.65 and 1,278.10

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Solution

The fourth proportional to 2,817.10, 4,225.65 and 1,278.10 is: 1,917.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.10 : 4,225.65 = 1,278.10 : x
  2. Step 2: Convert to fraction form
    2,817.10/4,225.65 = 1,278.10/x
  3. Step 3: Cross multiply
    2,817.10x = 4,225.65 × 1,278.10
  4. Step 4: Simplify right side
    2,817.10x = 5,400,803.27
  5. Step 5: Solve for x
    x = 5,400,803.27/2,817.10
  6. Step 6: Final answer
    x = 1,917.15

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Double scale
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Similar ratio
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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.