Home / 2,160.21-3,240.32-862.59

Finding the Fourth Proportional to 2,160.21, 3,240.32 and 862.59

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Solution

The fourth proportional to 2,160.21, 3,240.32 and 862.59 is: 1,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.21 : 3,240.32 = 862.59 : x
  2. Step 2: Convert to fraction form
    2,160.21/3,240.32 = 862.59/x
  3. Step 3: Cross multiply
    2,160.21x = 3,240.32 × 862.59
  4. Step 4: Simplify right side
    2,160.21x = 2,795,075.47
  5. Step 5: Solve for x
    x = 2,795,075.47/2,160.21
  6. Step 6: Final answer
    x = 1,293.89

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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.