Home / 1,573.40-2,172.22-1,089.23

Finding the Fourth Proportional to 1,573.40, 2,172.22 and 1,089.23

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Solution

The fourth proportional to 1,573.40, 2,172.22 and 1,089.23 is: 1,503.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.40 : 2,172.22 = 1,089.23 : x
  2. Step 2: Convert to fraction form
    1,573.40/2,172.22 = 1,089.23/x
  3. Step 3: Cross multiply
    1,573.40x = 2,172.22 × 1,089.23
  4. Step 4: Simplify right side
    1,573.40x = 2,366,033.61
  5. Step 5: Solve for x
    x = 2,366,033.61/1,573.40
  6. Step 6: Final answer
    x = 1,503.77

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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.