Home / 2,526.78-3,788.10-1,120.17

Finding the Fourth Proportional to 2,526.78, 3,788.10 and 1,120.17

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Solution

The fourth proportional to 2,526.78, 3,788.10 and 1,120.17 is: 1,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,526.78 : 3,788.10 = 1,120.17 : x
  2. Step 2: Convert to fraction form
    2,526.78/3,788.10 = 1,120.17/x
  3. Step 3: Cross multiply
    2,526.78x = 3,788.10 × 1,120.17
  4. Step 4: Simplify right side
    2,526.78x = 4,243,315.98
  5. Step 5: Solve for x
    x = 4,243,315.98/2,526.78
  6. Step 6: Final answer
    x = 1,679.34

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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.