Home / 2,916.24-4,378.23-2,145.30

Finding the Fourth Proportional to 2,916.24, 4,378.23 and 2,145.30

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Solution

The fourth proportional to 2,916.24, 4,378.23 and 2,145.30 is: 3,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.24 : 4,378.23 = 2,145.30 : x
  2. Step 2: Convert to fraction form
    2,916.24/4,378.23 = 2,145.30/x
  3. Step 3: Cross multiply
    2,916.24x = 4,378.23 × 2,145.30
  4. Step 4: Simplify right side
    2,916.24x = 9,392,616.82
  5. Step 5: Solve for x
    x = 9,392,616.82/2,916.24
  6. Step 6: Final answer
    x = 3,220.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.