Home / 1,518.31-2,277.51-1,172.17

Finding the Fourth Proportional to 1,518.31, 2,277.51 and 1,172.17

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Solution

The fourth proportional to 1,518.31, 2,277.51 and 1,172.17 is: 1,758.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.31 : 2,277.51 = 1,172.17 : x
  2. Step 2: Convert to fraction form
    1,518.31/2,277.51 = 1,172.17/x
  3. Step 3: Cross multiply
    1,518.31x = 2,277.51 × 1,172.17
  4. Step 4: Simplify right side
    1,518.31x = 2,669,628.90
  5. Step 5: Solve for x
    x = 2,669,628.90/1,518.31
  6. Step 6: Final answer
    x = 1,758.29

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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.