Home / 2,115.19-2,916.21-1,450.90

Finding the Fourth Proportional to 2,115.19, 2,916.21 and 1,450.90

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Solution

The fourth proportional to 2,115.19, 2,916.21 and 1,450.90 is: 2,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.19 : 2,916.21 = 1,450.90 : x
  2. Step 2: Convert to fraction form
    2,115.19/2,916.21 = 1,450.90/x
  3. Step 3: Cross multiply
    2,115.19x = 2,916.21 × 1,450.90
  4. Step 4: Simplify right side
    2,115.19x = 4,231,129.09
  5. Step 5: Solve for x
    x = 4,231,129.09/2,115.19
  6. Step 6: Final answer
    x = 2,000.35

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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.