Home / 3,421.14-4,720.95-1,929.18

Finding the Fourth Proportional to 3,421.14, 4,720.95 and 1,929.18

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Solution

The fourth proportional to 3,421.14, 4,720.95 and 1,929.18 is: 2,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.14 : 4,720.95 = 1,929.18 : x
  2. Step 2: Convert to fraction form
    3,421.14/4,720.95 = 1,929.18/x
  3. Step 3: Cross multiply
    3,421.14x = 4,720.95 × 1,929.18
  4. Step 4: Simplify right side
    3,421.14x = 9,107,580.02
  5. Step 5: Solve for x
    x = 9,107,580.02/3,421.14
  6. Step 6: Final answer
    x = 2,662.15

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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.