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Finding the Fourth Proportional to 1,943.54, 2,915.32 and 710.99

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Solution

The fourth proportional to 1,943.54, 2,915.32 and 710.99 is: 1,066.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.54 : 2,915.32 = 710.99 : x
  2. Step 2: Convert to fraction form
    1,943.54/2,915.32 = 710.99/x
  3. Step 3: Cross multiply
    1,943.54x = 2,915.32 × 710.99
  4. Step 4: Simplify right side
    1,943.54x = 2,072,747.01
  5. Step 5: Solve for x
    x = 2,072,747.01/1,943.54
  6. Step 6: Final answer
    x = 1,066.48

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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.