Home / 1,736.02-2,602.81-640.09

Finding the Fourth Proportional to 1,736.02, 2,602.81 and 640.09

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Solution

The fourth proportional to 1,736.02, 2,602.81 and 640.09 is: 959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.02 : 2,602.81 = 640.09 : x
  2. Step 2: Convert to fraction form
    1,736.02/2,602.81 = 640.09/x
  3. Step 3: Cross multiply
    1,736.02x = 2,602.81 × 640.09
  4. Step 4: Simplify right side
    1,736.02x = 1,666,032.65
  5. Step 5: Solve for x
    x = 1,666,032.65/1,736.02
  6. Step 6: Final answer
    x = 959.69

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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.