Home / 1,574.05-2,172.20-875.43

Finding the Fourth Proportional to 1,574.05, 2,172.20 and 875.43

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Solution

The fourth proportional to 1,574.05, 2,172.20 and 875.43 is: 1,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.05 : 2,172.20 = 875.43 : x
  2. Step 2: Convert to fraction form
    1,574.05/2,172.20 = 875.43/x
  3. Step 3: Cross multiply
    1,574.05x = 2,172.20 × 875.43
  4. Step 4: Simplify right side
    1,574.05x = 1,901,609.05
  5. Step 5: Solve for x
    x = 1,901,609.05/1,574.05
  6. Step 6: Final answer
    x = 1,208.10

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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.