Home / 2,817.10-3,887.85-1,558.45

Finding the Fourth Proportional to 2,817.10, 3,887.85 and 1,558.45

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Solution

The fourth proportional to 2,817.10, 3,887.85 and 1,558.45 is: 2,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.10 : 3,887.85 = 1,558.45 : x
  2. Step 2: Convert to fraction form
    2,817.10/3,887.85 = 1,558.45/x
  3. Step 3: Cross multiply
    2,817.10x = 3,887.85 × 1,558.45
  4. Step 4: Simplify right side
    2,817.10x = 6,059,019.83
  5. Step 5: Solve for x
    x = 6,059,019.83/2,817.10
  6. Step 6: Final answer
    x = 2,150.80

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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.