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Finding the Fourth Proportional to 1,504.85, 2,076.71 and 915.44

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Solution

The fourth proportional to 1,504.85, 2,076.71 and 915.44 is: 1,263.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,504.85 : 2,076.71 = 915.44 : x
  2. Step 2: Convert to fraction form
    1,504.85/2,076.71 = 915.44/x
  3. Step 3: Cross multiply
    1,504.85x = 2,076.71 × 915.44
  4. Step 4: Simplify right side
    1,504.85x = 1,901,088.44
  5. Step 5: Solve for x
    x = 1,901,088.44/1,504.85
  6. Step 6: Final answer
    x = 1,263.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.