Home / 3,281.80-4,929.90-2,421.64

Finding the Fourth Proportional to 3,281.80, 4,929.90 and 2,421.64

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Solution

The fourth proportional to 3,281.80, 4,929.90 and 2,421.64 is: 3,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.80 : 4,929.90 = 2,421.64 : x
  2. Step 2: Convert to fraction form
    3,281.80/4,929.90 = 2,421.64/x
  3. Step 3: Cross multiply
    3,281.80x = 4,929.90 × 2,421.64
  4. Step 4: Simplify right side
    3,281.80x = 11,938,443.04
  5. Step 5: Solve for x
    x = 11,938,443.04/3,281.80
  6. Step 6: Final answer
    x = 3,637.77

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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.