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Finding the Fourth Proportional to 1,915.56, 2,873.28 and 547.56

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Solution

The fourth proportional to 1,915.56, 2,873.28 and 547.56 is: 821.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.56 : 2,873.28 = 547.56 : x
  2. Step 2: Convert to fraction form
    1,915.56/2,873.28 = 547.56/x
  3. Step 3: Cross multiply
    1,915.56x = 2,873.28 × 547.56
  4. Step 4: Simplify right side
    1,915.56x = 1,573,293.20
  5. Step 5: Solve for x
    x = 1,573,293.20/1,915.56
  6. Step 6: Final answer
    x = 821.32

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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.