Home / 1,574.10-2,171.25-1,225.62

Finding the Fourth Proportional to 1,574.10, 2,171.25 and 1,225.62

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Solution

The fourth proportional to 1,574.10, 2,171.25 and 1,225.62 is: 1,690.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.10 : 2,171.25 = 1,225.62 : x
  2. Step 2: Convert to fraction form
    1,574.10/2,171.25 = 1,225.62/x
  3. Step 3: Cross multiply
    1,574.10x = 2,171.25 × 1,225.62
  4. Step 4: Simplify right side
    1,574.10x = 2,661,127.43
  5. Step 5: Solve for x
    x = 2,661,127.43/1,574.10
  6. Step 6: Final answer
    x = 1,690.57

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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.