Home / 7,180.58-10,771.47-1,916.39

Finding the Fourth Proportional to 7,180.58, 10,771.47 and 1,916.39

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Solution

The fourth proportional to 7,180.58, 10,771.47 and 1,916.39 is: 2,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.58 : 10,771.47 = 1,916.39 : x
  2. Step 2: Convert to fraction form
    7,180.58/10,771.47 = 1,916.39/x
  3. Step 3: Cross multiply
    7,180.58x = 10,771.47 × 1,916.39
  4. Step 4: Simplify right side
    7,180.58x = 20,642,283.54
  5. Step 5: Solve for x
    x = 20,642,283.54/7,180.58
  6. Step 6: Final answer
    x = 2,874.74

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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.