Home / 3,124.67-4,312.09-2,116.69

Finding the Fourth Proportional to 3,124.67, 4,312.09 and 2,116.69

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Solution

The fourth proportional to 3,124.67, 4,312.09 and 2,116.69 is: 2,921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.67 : 4,312.09 = 2,116.69 : x
  2. Step 2: Convert to fraction form
    3,124.67/4,312.09 = 2,116.69/x
  3. Step 3: Cross multiply
    3,124.67x = 4,312.09 × 2,116.69
  4. Step 4: Simplify right side
    3,124.67x = 9,127,352.97
  5. Step 5: Solve for x
    x = 9,127,352.97/3,124.67
  6. Step 6: Final answer
    x = 2,921.06

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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.