Home / 3,421.04-4,717.88-2,159.92

Finding the Fourth Proportional to 3,421.04, 4,717.88 and 2,159.92

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Solution

The fourth proportional to 3,421.04, 4,717.88 and 2,159.92 is: 2,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.04 : 4,717.88 = 2,159.92 : x
  2. Step 2: Convert to fraction form
    3,421.04/4,717.88 = 2,159.92/x
  3. Step 3: Cross multiply
    3,421.04x = 4,717.88 × 2,159.92
  4. Step 4: Simplify right side
    3,421.04x = 10,190,219.78
  5. Step 5: Solve for x
    x = 10,190,219.78/3,421.04
  6. Step 6: Final answer
    x = 2,978.69

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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.