Home / 1,515.07-2,273.06-638.01

Finding the Fourth Proportional to 1,515.07, 2,273.06 and 638.01

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Solution

The fourth proportional to 1,515.07, 2,273.06 and 638.01 is: 957.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.07 : 2,273.06 = 638.01 : x
  2. Step 2: Convert to fraction form
    1,515.07/2,273.06 = 638.01/x
  3. Step 3: Cross multiply
    1,515.07x = 2,273.06 × 638.01
  4. Step 4: Simplify right side
    1,515.07x = 1,450,236.61
  5. Step 5: Solve for x
    x = 1,450,236.61/1,515.07
  6. Step 6: Final answer
    x = 957.21

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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.