Home / 1,574.65-2,172.84-945.15

Finding the Fourth Proportional to 1,574.65, 2,172.84 and 945.15

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Solution

The fourth proportional to 1,574.65, 2,172.84 and 945.15 is: 1,304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.65 : 2,172.84 = 945.15 : x
  2. Step 2: Convert to fraction form
    1,574.65/2,172.84 = 945.15/x
  3. Step 3: Cross multiply
    1,574.65x = 2,172.84 × 945.15
  4. Step 4: Simplify right side
    1,574.65x = 2,053,659.73
  5. Step 5: Solve for x
    x = 2,053,659.73/1,574.65
  6. Step 6: Final answer
    x = 1,304.20

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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.