Home / 2,817.80-4,228.02-1,257.64

Finding the Fourth Proportional to 2,817.80, 4,228.02 and 1,257.64

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Solution

The fourth proportional to 2,817.80, 4,228.02 and 1,257.64 is: 1,887.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.80 : 4,228.02 = 1,257.64 : x
  2. Step 2: Convert to fraction form
    2,817.80/4,228.02 = 1,257.64/x
  3. Step 3: Cross multiply
    2,817.80x = 4,228.02 × 1,257.64
  4. Step 4: Simplify right side
    2,817.80x = 5,317,327.07
  5. Step 5: Solve for x
    x = 5,317,327.07/2,817.80
  6. Step 6: Final answer
    x = 1,887.05

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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.