Home / 2,916.61-4,374-1,272.71

Finding the Fourth Proportional to 2,916.61, 4,374 and 1,272.71

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Solution

The fourth proportional to 2,916.61, 4,374 and 1,272.71 is: 1,908.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.61 : 4,374 = 1,272.71 : x
  2. Step 2: Convert to fraction form
    2,916.61/4,374 = 1,272.71/x
  3. Step 3: Cross multiply
    2,916.61x = 4,374 × 1,272.71
  4. Step 4: Simplify right side
    2,916.61x = 5,566,844.48
  5. Step 5: Solve for x
    x = 5,566,844.48/2,916.61
  6. Step 6: Final answer
    x = 1,908.67

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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.