Home / 1,515.84-2,270.88-1,256.64

Finding the Fourth Proportional to 1,515.84, 2,270.88 and 1,256.64

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Solution

The fourth proportional to 1,515.84, 2,270.88 and 1,256.64 is: 1,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.84 : 2,270.88 = 1,256.64 : x
  2. Step 2: Convert to fraction form
    1,515.84/2,270.88 = 1,256.64/x
  3. Step 3: Cross multiply
    1,515.84x = 2,270.88 × 1,256.64
  4. Step 4: Simplify right side
    1,515.84x = 2,853,678.64
  5. Step 5: Solve for x
    x = 2,853,678.64/1,515.84
  6. Step 6: Final answer
    x = 1,882.57

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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.