Home / 1,916.16-2,874.39-617.67

Finding the Fourth Proportional to 1,916.16, 2,874.39 and 617.67

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Solution

The fourth proportional to 1,916.16, 2,874.39 and 617.67 is: 926.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.16 : 2,874.39 = 617.67 : x
  2. Step 2: Convert to fraction form
    1,916.16/2,874.39 = 617.67/x
  3. Step 3: Cross multiply
    1,916.16x = 2,874.39 × 617.67
  4. Step 4: Simplify right side
    1,916.16x = 1,775,424.47
  5. Step 5: Solve for x
    x = 1,775,424.47/1,916.16
  6. Step 6: Final answer
    x = 926.55

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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.