Home / 1,553.13-2,140.52-1,259.10

Finding the Fourth Proportional to 1,553.13, 2,140.52 and 1,259.10

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Solution

The fourth proportional to 1,553.13, 2,140.52 and 1,259.10 is: 1,735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.13 : 2,140.52 = 1,259.10 : x
  2. Step 2: Convert to fraction form
    1,553.13/2,140.52 = 1,259.10/x
  3. Step 3: Cross multiply
    1,553.13x = 2,140.52 × 1,259.10
  4. Step 4: Simplify right side
    1,553.13x = 2,695,122.44
  5. Step 5: Solve for x
    x = 2,695,122.44/1,553.13
  6. Step 6: Final answer
    x = 1,735.28

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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.