Home / 1,617.81-2,415.74-1,285.01

Finding the Fourth Proportional to 1,617.81, 2,415.74 and 1,285.01

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Solution

The fourth proportional to 1,617.81, 2,415.74 and 1,285.01 is: 1,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.81 : 2,415.74 = 1,285.01 : x
  2. Step 2: Convert to fraction form
    1,617.81/2,415.74 = 1,285.01/x
  3. Step 3: Cross multiply
    1,617.81x = 2,415.74 × 1,285.01
  4. Step 4: Simplify right side
    1,617.81x = 3,104,250.06
  5. Step 5: Solve for x
    x = 3,104,250.06/1,617.81
  6. Step 6: Final answer
    x = 1,918.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.