Home / 1,564.02-2,345.44-639.08

Finding the Fourth Proportional to 1,564.02, 2,345.44 and 639.08

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Solution

The fourth proportional to 1,564.02, 2,345.44 and 639.08 is: 958.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.02 : 2,345.44 = 639.08 : x
  2. Step 2: Convert to fraction form
    1,564.02/2,345.44 = 639.08/x
  3. Step 3: Cross multiply
    1,564.02x = 2,345.44 × 639.08
  4. Step 4: Simplify right side
    1,564.02x = 1,498,923.80
  5. Step 5: Solve for x
    x = 1,498,923.80/1,564.02
  6. Step 6: Final answer
    x = 958.38

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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.