Home / 1,553.60-2,144.64-1,105.76

Finding the Fourth Proportional to 1,553.60, 2,144.64 and 1,105.76

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Solution

The fourth proportional to 1,553.60, 2,144.64 and 1,105.76 is: 1,526.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.60 : 2,144.64 = 1,105.76 : x
  2. Step 2: Convert to fraction form
    1,553.60/2,144.64 = 1,105.76/x
  3. Step 3: Cross multiply
    1,553.60x = 2,144.64 × 1,105.76
  4. Step 4: Simplify right side
    1,553.60x = 2,371,457.13
  5. Step 5: Solve for x
    x = 2,371,457.13/1,553.60
  6. Step 6: Final answer
    x = 1,526.43

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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.