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Finding the Fourth Proportional to 1,617.36, 2,427.48 and 752.16

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Solution

The fourth proportional to 1,617.36, 2,427.48 and 752.16 is: 1,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.36 : 2,427.48 = 752.16 : x
  2. Step 2: Convert to fraction form
    1,617.36/2,427.48 = 752.16/x
  3. Step 3: Cross multiply
    1,617.36x = 2,427.48 × 752.16
  4. Step 4: Simplify right side
    1,617.36x = 1,825,837.46
  5. Step 5: Solve for x
    x = 1,825,837.46/1,617.36
  6. Step 6: Final answer
    x = 1,128.90

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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.