Home / 1,573.49-2,171.30-865.23

Finding the Fourth Proportional to 1,573.49, 2,171.30 and 865.23

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Solution

The fourth proportional to 1,573.49, 2,171.30 and 865.23 is: 1,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.49 : 2,171.30 = 865.23 : x
  2. Step 2: Convert to fraction form
    1,573.49/2,171.30 = 865.23/x
  3. Step 3: Cross multiply
    1,573.49x = 2,171.30 × 865.23
  4. Step 4: Simplify right side
    1,573.49x = 1,878,669.57
  5. Step 5: Solve for x
    x = 1,878,669.57/1,573.49
  6. Step 6: Final answer
    x = 1,193.95

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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.