Home / 1,574.12-2,171.78-1,013.60

Finding the Fourth Proportional to 1,574.12, 2,171.78 and 1,013.60

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Solution

The fourth proportional to 1,574.12, 2,171.78 and 1,013.60 is: 1,398.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.12 : 2,171.78 = 1,013.60 : x
  2. Step 2: Convert to fraction form
    1,574.12/2,171.78 = 1,013.60/x
  3. Step 3: Cross multiply
    1,574.12x = 2,171.78 × 1,013.60
  4. Step 4: Simplify right side
    1,574.12x = 2,201,324.17
  5. Step 5: Solve for x
    x = 2,201,324.17/1,574.12
  6. Step 6: Final answer
    x = 1,398.45

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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.