Home / 2,817.21-3,887.53-1,558.07

Finding the Fourth Proportional to 2,817.21, 3,887.53 and 1,558.07

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Solution

The fourth proportional to 2,817.21, 3,887.53 and 1,558.07 is: 2,150.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.21 : 3,887.53 = 1,558.07 : x
  2. Step 2: Convert to fraction form
    2,817.21/3,887.53 = 1,558.07/x
  3. Step 3: Cross multiply
    2,817.21x = 3,887.53 × 1,558.07
  4. Step 4: Simplify right side
    2,817.21x = 6,057,035.11
  5. Step 5: Solve for x
    x = 6,057,035.11/2,817.21
  6. Step 6: Final answer
    x = 2,150.01

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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.