Home / 1,574.73-2,172.90-945.12

Finding the Fourth Proportional to 1,574.73, 2,172.90 and 945.12

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Solution

The fourth proportional to 1,574.73, 2,172.90 and 945.12 is: 1,304.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.73 : 2,172.90 = 945.12 : x
  2. Step 2: Convert to fraction form
    1,574.73/2,172.90 = 945.12/x
  3. Step 3: Cross multiply
    1,574.73x = 2,172.90 × 945.12
  4. Step 4: Simplify right side
    1,574.73x = 2,053,657.62
  5. Step 5: Solve for x
    x = 2,053,657.62/1,574.73
  6. Step 6: Final answer
    x = 1,304.13

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1.5x scale

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.