Home / 1,553.54-2,142.56-1,135.30

Finding the Fourth Proportional to 1,553.54, 2,142.56 and 1,135.30

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Solution

The fourth proportional to 1,553.54, 2,142.56 and 1,135.30 is: 1,565.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.54 : 2,142.56 = 1,135.30 : x
  2. Step 2: Convert to fraction form
    1,553.54/2,142.56 = 1,135.30/x
  3. Step 3: Cross multiply
    1,553.54x = 2,142.56 × 1,135.30
  4. Step 4: Simplify right side
    1,553.54x = 2,432,448.37
  5. Step 5: Solve for x
    x = 2,432,448.37/1,553.54
  6. Step 6: Final answer
    x = 1,565.75

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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.