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Finding the Fourth Proportional to 1,697.37, 2,540.65 and 916.26

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Solution

The fourth proportional to 1,697.37, 2,540.65 and 916.26 is: 1,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.37 : 2,540.65 = 916.26 : x
  2. Step 2: Convert to fraction form
    1,697.37/2,540.65 = 916.26/x
  3. Step 3: Cross multiply
    1,697.37x = 2,540.65 × 916.26
  4. Step 4: Simplify right side
    1,697.37x = 2,327,895.97
  5. Step 5: Solve for x
    x = 2,327,895.97/1,697.37
  6. Step 6: Final answer
    x = 1,371.47

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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.