Home / 1,617.50-2,232.16-918.88

Finding the Fourth Proportional to 1,617.50, 2,232.16 and 918.88

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Solution

The fourth proportional to 1,617.50, 2,232.16 and 918.88 is: 1,268.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.50 : 2,232.16 = 918.88 : x
  2. Step 2: Convert to fraction form
    1,617.50/2,232.16 = 918.88/x
  3. Step 3: Cross multiply
    1,617.50x = 2,232.16 × 918.88
  4. Step 4: Simplify right side
    1,617.50x = 2,051,087.18
  5. Step 5: Solve for x
    x = 2,051,087.18/1,617.50
  6. Step 6: Final answer
    x = 1,268.06

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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.