Home / 3,172.47-4,376.67-2,124.87

Finding the Fourth Proportional to 3,172.47, 4,376.67 and 2,124.87

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Solution

The fourth proportional to 3,172.47, 4,376.67 and 2,124.87 is: 2,931.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.47 : 4,376.67 = 2,124.87 : x
  2. Step 2: Convert to fraction form
    3,172.47/4,376.67 = 2,124.87/x
  3. Step 3: Cross multiply
    3,172.47x = 4,376.67 × 2,124.87
  4. Step 4: Simplify right side
    3,172.47x = 9,299,844.16
  5. Step 5: Solve for x
    x = 9,299,844.16/3,172.47
  6. Step 6: Final answer
    x = 2,931.42

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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.