Home / 3,172.59-4,376.84-2,124.99

Finding the Fourth Proportional to 3,172.59, 4,376.84 and 2,124.99

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Solution

The fourth proportional to 3,172.59, 4,376.84 and 2,124.99 is: 2,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.59 : 4,376.84 = 2,124.99 : x
  2. Step 2: Convert to fraction form
    3,172.59/4,376.84 = 2,124.99/x
  3. Step 3: Cross multiply
    3,172.59x = 4,376.84 × 2,124.99
  4. Step 4: Simplify right side
    3,172.59x = 9,300,730.61
  5. Step 5: Solve for x
    x = 9,300,730.61/3,172.59
  6. Step 6: Final answer
    x = 2,931.59

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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.