Home / 5,148.84-7,105.38-2,790.99

Finding the Fourth Proportional to 5,148.84, 7,105.38 and 2,790.99

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Solution

The fourth proportional to 5,148.84, 7,105.38 and 2,790.99 is: 3,851.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.84 : 7,105.38 = 2,790.99 : x
  2. Step 2: Convert to fraction form
    5,148.84/7,105.38 = 2,790.99/x
  3. Step 3: Cross multiply
    5,148.84x = 7,105.38 × 2,790.99
  4. Step 4: Simplify right side
    5,148.84x = 19,831,044.53
  5. Step 5: Solve for x
    x = 19,831,044.53/5,148.84
  6. Step 6: Final answer
    x = 3,851.56

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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.