Home / 1,561.28-2,153.60-1,036.48

Finding the Fourth Proportional to 1,561.28, 2,153.60 and 1,036.48

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Solution

The fourth proportional to 1,561.28, 2,153.60 and 1,036.48 is: 1,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.28 : 2,153.60 = 1,036.48 : x
  2. Step 2: Convert to fraction form
    1,561.28/2,153.60 = 1,036.48/x
  3. Step 3: Cross multiply
    1,561.28x = 2,153.60 × 1,036.48
  4. Step 4: Simplify right side
    1,561.28x = 2,232,163.33
  5. Step 5: Solve for x
    x = 2,232,163.33/1,561.28
  6. Step 6: Final answer
    x = 1,429.70

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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.