Home / 3,243.47-4,475.72-1,916.91

Finding the Fourth Proportional to 3,243.47, 4,475.72 and 1,916.91

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Solution

The fourth proportional to 3,243.47, 4,475.72 and 1,916.91 is: 2,645.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.47 : 4,475.72 = 1,916.91 : x
  2. Step 2: Convert to fraction form
    3,243.47/4,475.72 = 1,916.91/x
  3. Step 3: Cross multiply
    3,243.47x = 4,475.72 × 1,916.91
  4. Step 4: Simplify right side
    3,243.47x = 8,579,542.84
  5. Step 5: Solve for x
    x = 8,579,542.84/3,243.47
  6. Step 6: Final answer
    x = 2,645.18

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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.