Home / 1,581.21-2,370.35-656.98

Finding the Fourth Proportional to 1,581.21, 2,370.35 and 656.98

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Solution

The fourth proportional to 1,581.21, 2,370.35 and 656.98 is: 984.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.21 : 2,370.35 = 656.98 : x
  2. Step 2: Convert to fraction form
    1,581.21/2,370.35 = 656.98/x
  3. Step 3: Cross multiply
    1,581.21x = 2,370.35 × 656.98
  4. Step 4: Simplify right side
    1,581.21x = 1,557,268.26
  5. Step 5: Solve for x
    x = 1,557,268.26/1,581.21
  6. Step 6: Final answer
    x = 984.86

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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.