Home / 1,574.97-2,172.69-1,223.22

Finding the Fourth Proportional to 1,574.97, 2,172.69 and 1,223.22

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Solution

The fourth proportional to 1,574.97, 2,172.69 and 1,223.22 is: 1,687.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.97 : 2,172.69 = 1,223.22 : x
  2. Step 2: Convert to fraction form
    1,574.97/2,172.69 = 1,223.22/x
  3. Step 3: Cross multiply
    1,574.97x = 2,172.69 × 1,223.22
  4. Step 4: Simplify right side
    1,574.97x = 2,657,677.86
  5. Step 5: Solve for x
    x = 2,657,677.86/1,574.97
  6. Step 6: Final answer
    x = 1,687.45

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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.