Home / 2,651.60-3,977.40-1,557.20

Finding the Fourth Proportional to 2,651.60, 3,977.40 and 1,557.20

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Solution

The fourth proportional to 2,651.60, 3,977.40 and 1,557.20 is: 2,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.60 : 3,977.40 = 1,557.20 : x
  2. Step 2: Convert to fraction form
    2,651.60/3,977.40 = 1,557.20/x
  3. Step 3: Cross multiply
    2,651.60x = 3,977.40 × 1,557.20
  4. Step 4: Simplify right side
    2,651.60x = 6,193,607.28
  5. Step 5: Solve for x
    x = 6,193,607.28/2,651.60
  6. Step 6: Final answer
    x = 2,335.80

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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.