Home / 2,221.60-3,064.87-1,558.88

Finding the Fourth Proportional to 2,221.60, 3,064.87 and 1,558.88

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Solution

The fourth proportional to 2,221.60, 3,064.87 and 1,558.88 is: 2,150.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.60 : 3,064.87 = 1,558.88 : x
  2. Step 2: Convert to fraction form
    2,221.60/3,064.87 = 1,558.88/x
  3. Step 3: Cross multiply
    2,221.60x = 3,064.87 × 1,558.88
  4. Step 4: Simplify right side
    2,221.60x = 4,777,779.90
  5. Step 5: Solve for x
    x = 4,777,779.90/2,221.60
  6. Step 6: Final answer
    x = 2,150.60

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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.