Home / 5,425.41-8,139.12-1,916.43

Finding the Fourth Proportional to 5,425.41, 8,139.12 and 1,916.43

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Solution

The fourth proportional to 5,425.41, 8,139.12 and 1,916.43 is: 2,875.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.41 : 8,139.12 = 1,916.43 : x
  2. Step 2: Convert to fraction form
    5,425.41/8,139.12 = 1,916.43/x
  3. Step 3: Cross multiply
    5,425.41x = 8,139.12 × 1,916.43
  4. Step 4: Simplify right side
    5,425.41x = 15,598,053.74
  5. Step 5: Solve for x
    x = 15,598,053.74/5,425.41
  6. Step 6: Final answer
    x = 2,875.00

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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.