Home / 2,421.80-3,340.14-1,537.82

Finding the Fourth Proportional to 2,421.80, 3,340.14 and 1,537.82

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Solution

The fourth proportional to 2,421.80, 3,340.14 and 1,537.82 is: 2,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.80 : 3,340.14 = 1,537.82 : x
  2. Step 2: Convert to fraction form
    2,421.80/3,340.14 = 1,537.82/x
  3. Step 3: Cross multiply
    2,421.80x = 3,340.14 × 1,537.82
  4. Step 4: Simplify right side
    2,421.80x = 5,136,534.09
  5. Step 5: Solve for x
    x = 5,136,534.09/2,421.80
  6. Step 6: Final answer
    x = 2,120.96

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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.