Home / 1,745.35-2,615.90-921.58

Finding the Fourth Proportional to 1,745.35, 2,615.90 and 921.58

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Solution

The fourth proportional to 1,745.35, 2,615.90 and 921.58 is: 1,381.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.35 : 2,615.90 = 921.58 : x
  2. Step 2: Convert to fraction form
    1,745.35/2,615.90 = 921.58/x
  3. Step 3: Cross multiply
    1,745.35x = 2,615.90 × 921.58
  4. Step 4: Simplify right side
    1,745.35x = 2,410,749.97
  5. Step 5: Solve for x
    x = 2,410,749.97/1,745.35
  6. Step 6: Final answer
    x = 1,381.24

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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.